01 Record
CVE-2026-76457
Cisco NX-OS Software Security Hardening Release: October 2026 - Out-of-bounds Read Vulnerabilities
HighPUBLISHEDCNA: cisco
CNA base score8.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
02 Description
Cisco NX-OS Software Security Hardening Release: October 2026 - Out-of-bounds Read Vulnerabilities
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.27% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 20.0% of scored records. A rank, not a probability.
- NVD base score
- 8.6 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-08.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-07 16:15Z21 DAYS AGO
- Last updated
- 2026-10-07 17:45Z21 DAYS AGO
- Reserved
- 2026-08-19
- Assigning CNA
- cisco
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.6)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- Data version
- 5.2
- Document digest
- 9d6ce498b2a7ed8fa54d2759b05d0fc2400f30ca0f4f004f4043ed53813a2beb
05 Affected products
VendorProductVersionsPlatforms
CiscoCisco NX-OS Software8.2(5), 7.3(5)D1(1), 8.4(2), 8.4(3), 9.2(3), 8.2(1), 7.3(1)D1(1), 9.2(2v), 7.3(0)D1(1), 7.3(4)D1(1), 9.2(1), 9.2(2t), 9.2(3y), 9.3(2), 7.3(1)DY(1), 8.1(1), 8.2(2), 8.3(2), 7.3(2)D1(3a), 9.2(4), 8.1(2), 7.3(3)D1(1), 8.2(3), 8.3(1), 8.4(1), 8.1(1b), 7.3(0)DX(1), 7.3(2)D1(1), 9.3(1), 7.3(2)D1(2), 8.2(4), 7.3(0)DY(1), 9.3(1z), 9.2(2), 8.1(2a), 7.3(2)D1(3), 8.1(1a), 8.4(1a), 9.3(3), 7.3(2)D1(1d), 9.3(4), 7.3(6)D1(1), 8.2(6), 9.3(5), 8.4(2a), 8.4(2b), 8.5(1), 9.3(6), 8.4(4), 7.3(7)D1(1), 8.4(2c), 9.3(5w), 8.2(7), 9.3(7), 9.3(7k), 7.3(8)D1(1), 9.3(7a), 8.2(7a), 9.3(8), 8.4(4a), 8.4(2d), 8.4(5), 8.2(8), 9.3(9), 7.3(9)D1(1), 8.4(6), 8.4(2e), 9.3(10), 9.2(1a), 8.2(9), 10.3(1), 8.4(7), 10.3(2), 8.4(6a), 9.3(11), 10.3(3), 9.4(1), 9.3(2a), 8.4(2f), 8.2(10), 9.3(12), 10.4(1), 8.4(8), 10.3(99w), 10.3(3w), 10.3(99x), 10.3(3o), 8.4(9), 10.3(4), 10.3(3p), 10.3(4a), 9.4(1a), 10.4(2), 10.3(3q), 9.3(13), 8.2(11), 9.4(2), 10.3(5), 10.4(3), 10.3(3x), 10.3(4g), 10.5(1), 8.4(10), 9.4(2a), 10.3(3r), 10.3(6), 9.3(14), 10.4(4), 10.3(4h), 10.5(2), 10.5(1j), 8.4(11), 9.4(3), 10.3(7), 10.4(5), 10.5(3), 9.3(15), 9.4(3a), 10.4(4g), 10.5(4), 9.4(3b), 8.4(12), 10.6(1), 10.5(3t), 10.3(8), 10.4(6), 10.5(3s), 10.5(3e), 9.4(4), 10.5(3o), 9.3(16), 10.6(1s), 10.6(2), 10.5(3p), 9.4(5), 10.3(9), 10.6(2s), 8.4(13), 10.6(3), 10.4(7), 10.5(5), 9.3(17), 10.6(2n), 10.6(3q), 10.6(3o), 10.6(3s)—
CiscoCisco NX-OS System Software in ACI Mode15.2(1g), 15.2(2e), 15.2(2f), 15.2(2g), 15.2(2h), 15.2(3f), 15.2(3e), 15.2(3g), 15.2(4d), 15.2(4e), 15.2(5c), 15.2(5d), 16.0(1g), 15.2(5e), 15.2(4f), 15.2(6e), 15.2(6h), 16.0(1j), 15.2(6g), 15.2(7f), 15.2(7g), 16.0(2h), 15.2(8d), 16.0(2j), 15.2(8e), 16.0(3d), 16.0(3e), 15.2(8f), 15.2(8g), 15.3(1d), 15.2(8h), 16.0(4c), 15.3(2a), 15.2(8i), 16.0(5h), 15.3(2b), 16.0(3g), 16.0(5j), 15.3(2c), 16.0(6c), 15.3(2d), 16.1(1f), 16.0(7e), 16.0(8e), 15.3(2e), 16.0(8f), 16.1(2f), 16.1(2g), 15.3(2f), 16.0(9c), 16.1(3f), 16.0(9d), 16.0(6h), 16.0(8h), 16.1(3g), 16.0(9e), 16.1(4h), 16.1(5e), 16.2(1g), 16.0(9f), 16.2(2e)—
CiscoCisco Unified Computing System (Managed)4.0(1a), 4.1(1d), 4.0(4f), 4.0(4c), 4.0(2b), 4.1(2a), 4.0(4a), 4.0(4e), 4.0(4h), 4.0(2a), 4.1(1c), 4.0(1b), 4.1(1e), 4.0(4d), 4.0(4b), 4.0(2e), 4.1(1a), 4.0(4g), 4.0(1d), 4.0(1c), 4.0(4i), 4.0(2d), 4.1(1b), 4.1(2b), 4.0(4k), 4.1(3a), 4.1(3b), 4.1(2c), 4.0(4l), 4.1(4a), 4.1(3c), 4.1(3d), 4.2(1c), 4.2(1d), 4.0(4m), 4.1(3e), 4.2(1f), 4.1(3f), 4.2(1i), 4.1(3h), 4.2(1k), 4.2(1l), 4.0(4n), 4.2(1m), 4.1(3i), 4.2(2a), 4.2(1n), 4.1(3j), 4.2(2c), 4.2(2d), 4.2(3b), 4.1(3k), 4.0(4o), 4.2(2e), 4.2(3d), 4.2(3e), 4.2(3g), 4.1(3l), 4.3(2b), 4.2(3h), 4.2(3i), 4.3(2c), 4.1(3m), 4.3(2e), 4.3(3a), 4.2(3j), 4.3(3c), 4.3(4a), 4.2(3k), 4.3(4b), 4.3(4c), 4.2(3l), 4.3(4d), 4.3(2f), 4.2(3m), 4.3(5a), 4.3(4e), 4.1(3n), 4.3(4f), 4.2(3n), 4.3(5c), 4.2(3o), 4.3(5d), 4.3(6a), 4.3(6b), 4.3(5e), 4.3(6c), 4.2(3p), 6.0(1b), 6.0(1c), 4.3(6d), 6.0(1d), 6.0(1e), 4.3(6e), 6.0(1f), 4.3(6f), 6.0(2b), 6.0(1h), 4.2(3r), 6.0(2c), 4.3(6g), 6.0(2d), 4.3(6h), 4.2(3s), 4.3(6i)—
06 References
- sec.cloudapps.cisco.comcisco-sa-hardening-nxosw1-cWzSbtRhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-nxosw1-cWzSbtR