CVE-2025-20159Cisco IOS XR Software Management Interface ACL Bypass Vulnerability
- 5.3MediumCVSS base score
- 0.33%Exploitation in 30 daysEPSS · top 73% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability in the management interface access control list (ACL) processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for the SSH, NetConf, and gRPC features. This vulnerability exists because management interface ACLs have not been supported on Cisco IOS XR Software Packet I/O infrastructure platforms for Linux-handled features such as SSH, NetConf, or gRPC. An attacker could exploit this vulnerability by attempting to send traffic to an affected device. A successful exploit could allow the attacker to bypass an ingress ACL that is applied on the management interface of the affected device.
Timeline
ID reserved
By cisco
- 11 months later
· 11 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.33% · top 73% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
- affected 6.6.1
- affected 6.5.3
- affected 7.0.1
- affected 6.6.11
- affected 6.5.1
- affected 6.5.2
- affected 6.6.2
- affected 6.6.12
- affected 6.6.25
- affected 7.1.1
- affected 7.0.90
- affected 6.6.3
- affected 7.0.2
- affected 7.1.2
- affected 7.2.1
- affected 7.0.11
- affected 7.0.12
- affected 7.0.14
- affected 6.6.4
- affected 7.2.12
- affected 7.3.1
- affected 7.4.1
- affected 7.2.2
- affected 7.3.15
- affected 7.3.16
- affected 7.4.15
- affected 7.3.2
- affected 7.5.1
- affected 7.4.16
- affected 7.3.27
- affected 7.6.1
- affected 7.5.2
- affected 7.8.1
- affected 7.6.15
- affected 7.5.12
- affected 7.8.12
- affected 7.3.4
- affected 7.3.3
- affected 7.4.2
- affected 7.7.1
- and 34 more
What to do
Exploitation: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-27574 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-20159)Record last updated .