# CVE-2024-2961: CVE-2024-2961

Status: published. Published: 2024-04-17. Updated: 2026-11-03.

The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- The GNU C Library / glibc: ≥ 2.1.93; < 2.40 (affected, custom). Source: CNA: glibc
- gnu / glibc: ≥ 2.1.93; < 2.40 (affected, semver). Source: ADP: CISA-ADP
- Siemens / SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.5; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: ≥ V3.1.5; < * (affected, custom). Source: ADP: siemens-SADP
- Siemens / SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: ≥ V3.1.5; < * (affected, custom). Source: ADP: siemens-SADP

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "2.40",
            "versionStartIncluding": "2.1.93",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h300s_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h300s:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h500s_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h500s:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h700s_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h700s:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h410s_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h410s:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h410c_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h410c:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h610c_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h610c:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h610s_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h610s:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_h615c_firmware:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_h615c:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:netapp:hci_compute_node:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 7.3 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H; source: ADP: CISA-ADP

- CVSS 3.1: 7.3 (high); CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H; source: NVD: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- CISA KEV: No listing in collected sources

- EPSS: 88.33% as of 2026-11-03; percentile 99.77%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-787

## Exploit evidence

- exploit: https://www.ambionics.io/blog/iconv-cve-2024-2961-p1 (ADP: CISA-ADP)

## References

- https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004 (CNA: glibc)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/ (CNA: glibc)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/ (CNA: glibc)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/ (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/04/24/2 (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/04/17/9 (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/04/18/4 (CNA: glibc)

- https://lists.debian.org/debian-lts-announce/2024/05/msg00001.html (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/05/27/2 (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/05/27/6 (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/05/27/1 (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/05/27/4 (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/05/27/5 (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/05/27/3 (CNA: glibc)

- https://security.netapp.com/advisory/ntap-20240531-0002/ (CNA: glibc)

- http://www.openwall.com/lists/oss-security/2024/07/22/5 (CNA: glibc)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p1 (ADP: CISA-ADP; exploit)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p1 (ADP: CVE)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p2 (ADP: CVE)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p3 (ADP: CVE)

- https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004 (ADP: CVE; x_transferred)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/ (ADP: CVE; x_transferred)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/ (ADP: CVE; x_transferred)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/ (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/04/24/2 (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/04/17/9 (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/04/18/4 (ADP: CVE; x_transferred)

- https://lists.debian.org/debian-lts-announce/2024/05/msg00001.html (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/05/27/2 (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/05/27/6 (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/05/27/1 (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/05/27/4 (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/05/27/5 (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/05/27/3 (ADP: CVE; x_transferred)

- https://security.netapp.com/advisory/ntap-20240531-0002/ (ADP: CVE; x_transferred)

- http://www.openwall.com/lists/oss-security/2024/07/22/5 (ADP: CVE; x_transferred)

- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (ADP: siemens-SADP)

- http://www.openwall.com/lists/oss-security/2024/04/17/9 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/04/18/4 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/04/24/2 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/1 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/2 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/3 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/4 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/5 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/6 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/07/22/5 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- https://lists.debian.org/debian-lts-announce/2024/05/msg00001.html (3ff69d7a-14f2-4f67-a097-88dee7810d18; Mailing List, Third Party Advisory)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/ (3ff69d7a-14f2-4f67-a097-88dee7810d18; Broken Link)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/ (3ff69d7a-14f2-4f67-a097-88dee7810d18; Broken Link)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/ (3ff69d7a-14f2-4f67-a097-88dee7810d18; Broken Link)

- https://security.netapp.com/advisory/ntap-20240531-0002/ (3ff69d7a-14f2-4f67-a097-88dee7810d18; Third Party Advisory)

- https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004 (3ff69d7a-14f2-4f67-a097-88dee7810d18; Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/04/17/9 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/04/18/4 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/04/24/2 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/1 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/2 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/3 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/4 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/5 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/05/27/6 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- http://www.openwall.com/lists/oss-security/2024/07/22/5 (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- https://lists.debian.org/debian-lts-announce/2024/05/msg00001.html (af854a3a-2127-422b-91ae-364da2661108; Mailing List, Third Party Advisory)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/ (af854a3a-2127-422b-91ae-364da2661108; Broken Link)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/ (af854a3a-2127-422b-91ae-364da2661108; Broken Link)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/ (af854a3a-2127-422b-91ae-364da2661108; Broken Link)

- https://security.netapp.com/advisory/ntap-20240531-0002/ (af854a3a-2127-422b-91ae-364da2661108; Third Party Advisory)

- https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004 (af854a3a-2127-422b-91ae-364da2661108; Third Party Advisory)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p1 (af854a3a-2127-422b-91ae-364da2661108; Broken Link)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p2 (af854a3a-2127-422b-91ae-364da2661108; Broken Link)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p3 (af854a3a-2127-422b-91ae-364da2661108; Broken Link)

- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (0b142b55-0307-4c5a-b3c9-f314f3fb7c5e)

- https://www.ambionics.io/blog/iconv-cve-2024-2961-p1 (134c704f-9b21-4f2e-91b3-4a467353bcc0; Broken Link)

## Provenance

- CNA: glibc: https://www.cve.org/CVERecord?id=CVE-2024-2961; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-2961; retrieved 2026-11-04; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2024-2961; retrieved 2026-11-03; source updated Not reported

Revision: ecb66d06fc144d2b6481c9e19d20a572cf5e4f0615560cb181635c762269bb60

Canonical: https://y2.dev/cve/CVE-2024-2961

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