# CVE-2026-121382: Netcore NBR100V2 auto_ac msg_aes_dec integer overflow

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

A vulnerability was determined in Netcore NBR100V2 1.3.240614.030928. Affected by this issue is the function msg_aes_dec of the file /usr/bin/auto_ac. This manipulation causes integer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Netcore / NBR100V2: 1.3.240614.030928 (affected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 8.7 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P; source: CNA: VulDB

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:C; source: CNA: VulDB

- CVSS 3.0: 7.5 (high); CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:C; source: CNA: VulDB

- CVSS 2.0: 7.8 (high); AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:ND/RC:C; source: CNA: VulDB

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-190, CWE-189

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://vuldb.com/vuln/430256 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/430256/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-121382 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1018496 (CNA: VulDB; third-party-advisory)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-121382; retrieved 2026-11-03; source updated 2026-11-03

Revision: faf847cc8c638738540b8ea8b2f94527ea758a154d7dbb83cc53b42ace0bf07f

Canonical: https://y2.dev/cve/CVE-2026-121382

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