01 Record
CVE-2023-20191
A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured
MediumPUBLISHEDCNA: cisco
CNA base score5.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
02 Description
A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.59% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 48.4% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (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:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- 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
- 2023-09-13 16:41Z3 YR AGO
- Last updated
- 2024-08-02 09:05Z2 YR AGO
- Reserved
- 2022-10-27
- Assigning CNA
- cisco
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.8)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
- Weaknesses
- Data version
- 5.1
- Document digest
- 2207093f2697421d32182a3a0ca20d90258b678561bc82496a8fff751b9b25f8
05 Affected products
VendorProductVersionsPlatforms
CiscoCisco IOS XR Software6.4.1, 6.5.1, 6.5.2, 6.5.3, 6.6.2, 6.6.3, 6.6.25, 6.6.4, 7.0.1, 7.0.2, 7.1.1, 7.1.2, 7.2.1, 7.2.2, 7.3.1, 7.3.2, 7.3.3, 7.3.5, 7.4.1, 7.4.2, 7.5.1, 7.5.3, 7.5.2, 7.5.4, 7.6.1, 7.6.2, 7.7.1, 7.7.2, 7.8.1, 7.8.2, 7.9.1—
06 References
- sec.cloudapps.cisco.comcisco-sa-dnx-acl-PyzDkeYFhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnx-acl-PyzDkeYF