# CVE-2026-121353: Adobe Connect | Improper Neutralization of CRLF Sequences ('CRLF Injection') (CWE-93)

Status: published. Published: 2026-11-10. Updated: 2026-11-11.

Adobe Connect is affected by an Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability that could result in arbitrary code execution in the context of the current user, potentially gaining elevated access or control over the victim's account or session. Exploitation of this issue does not require user interaction. Scope is changed.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Adobe / Adobe Connect: ≥ 0; ≤ 12.8 (affected, custom); 12.8.a (unaffected, custom). Source: CNA: adobe
- Adobe / Adobe Connect: ≥ 0; ≤ 12.9 (affected, custom); 12.9.a (unaffected, custom). Source: CNA: adobe
- Adobe / Adobe Connect: ≥ 0; ≤ 12.10 (affected, custom); 12.10.f (unaffected, custom). Source: CNA: adobe
- Adobe / Adobe Connect: ≥ 0; ≤ 12.11 (affected, custom); 12.11.i (unaffected, custom). Source: CNA: adobe
- Adobe / Adobe Connect: ≥ 0; ≤ 12.12 (affected, custom); 12.12.a (unaffected, custom). Source: CNA: adobe

## Severity and prioritization

- CVSS 3.1: 10 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N; source: CNA: adobe

- CVSS 3.1: 10 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N; source: NVD: psirt@adobe.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

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

- Weaknesses: CWE-93

## Exploit evidence

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

## References

- https://www.adobe.com/trust/security/products/connect/apsb26-191.html (CNA: adobe; vendor-advisory)

- https://www.adobe.com/trust/security/products/connect/apsb26-191.html (psirt@adobe.com)

## Provenance

- CNA: adobe: https://www.cve.org/CVERecord?id=CVE-2026-121353; retrieved 2026-11-11; source updated 2026-11-11

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121353; retrieved 2026-11-11; source updated 2026-11-11

Revision: 39f07c0a77ed29558f29c291bf875932fcbf5ca7c9b3b5c10747d306c9edfc71

Canonical: https://y2.dev/cve/CVE-2026-121353

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