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TI-2025-14556 Aliases CVE-2025-20258GHSA-3c8c-p5w2-6pxx

Command injection in Cisco Duo

Priority LOW 26CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A vulnerability in the self-service portal of Cisco Duo could allow an unauthenticated, remote attacker to inject arbitrary commands into emails that are sent by the service. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by injecting arbitrary commands into a portion of an email that is sent by the service. A successful exploit could allow the attacker to send emails that contain malicious content to unsuspecting users.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00299 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco DuoN/A—No fix listedCNA
  • Cisco Duo VendorCisco Affected N/A Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:duo:-:*:*:*:*:-:*:*not specified by NVDVulnerableCisco
  • cpe:2.3:a:cisco:duo:-:*:*:*:*:-:*:* Versions not specified by NVD Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-20258
  2. 2026-10-03 Alias added: GHSA-3c8c-p5w2-6pxx

References

Advisory 1

  • TI-2022-05221 Cisco Duo for macOS Authentication Bypass Vulnerability CVSS 3.1MEDIUM 6.8
  • TI-2023-06830 Cisco Duo Authentication for macOS and Duo Authentication for Windows Logon Offline Credentials Replay Vulnerability CVSS 3.1MEDIUM 6.3
  • TI-2023-06905 Cisco Duo Two-Factor Authentication for macOS Authentication Bypass Vulnerability CVSS 3.1MEDIUM 6.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences