Critical9.8Cisco Updated
Cisco Integrated Management Controller Authentication Bypass Vulnerability
cisco-sa-cimc-auth-bypass-AgG2BxTn Published Apr 1, 2026Updated by vendor Apr 1, 2026
CVE-2026-20093
Affected products & platforms
CiscoUnclassified
Summary
A vulnerability in the change password functionality of Cisco Integrated Management Controller (IMC) could allow an unauthenticated, remote attacker to bypass authentication and gain access to the system as Admin. This vulnerability is due to incorrect handling of password change requests.
Affected versions
- Scope: This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco IMC, regardless of device configuration:
- Release 4.15 and earlier (first fixed: 4.15.5)
- 4.16 and earlier — Migrate to a fixed release
- Release 4.18 (first fixed: 4.18.3 (Apr 2026))
- 4.2 and earlier — Migrate to a fixed release
- Release 4.3 (first fixed: 4.3(2.260007))
- 4.2 and earlier — Migrate to a fixed release
- Release 4.3 (first fixed: 4.3(6.260017))
- Release 6.0 (first fixed: 6.0(1.250174))
- Release 3.2 and earlier (first fixed: 3.2.17)
- Release 4.15 and earlier (first fixed: 4.15.3)
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- 4.15.5
- 4.18.3 (Apr 2026)
- 4.3(2.260007)
- 4.3(6.260017)
- 6.0(1.250174)
- 3.2.17
- 4.15.3
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
- Release 4.15 and earlier: upgrade to 4.15.5.
- Release 4.16 and earlier: migrate to a fixed release.
- Release 4.18: upgrade to 4.18.3 (Apr 2026).
- Release 4.2 and earlier: migrate to a fixed release.
- Release 4.3: upgrade to 4.3(2.260007).
- Release 4.2 and earlier: migrate to a fixed release.
- Release 4.3: upgrade to 4.3(6.260017).
- Release 6.0: upgrade to 6.0(1.250174).
Temporary workarounds
- There are no workarounds that address this vulnerability.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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