Read the docs
TI-2024-13390 Aliases CVE-2024-20465GHSA-q728-88fr-65v3

Improper access control in Cisco IOS

Priority LOW 32CWE-284Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

A vulnerability in the access control list (ACL) programming of Cisco IOS Software running on Cisco Industrial Ethernet 4000, 4010, and 5000 Series Switches could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to the incorrect handling of IPv4 ACLs on switched virtual interfaces when an administrator enables and disables Resilient Ethernet Protocol (REP). An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00416 36th 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
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoIOS15.2(8)E2; 15.2(8)E3; 15.2(8)E4; 15.2(8)E5—No fix listedCNA
  • IOS VendorCisco Affected 15.2(8)E2; 15.2(8)E3; 15.2(8)E4; 15.2(8)E5 Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:15.2\(8\)e2:*:*:*:*:*:*:*15.2(8)e2VulnerableCisco
cpe:2.3:o:cisco:ios:15.2\(8\)e3:*:*:*:*:*:*:*15.2(8)e3VulnerableCisco
cpe:2.3:o:cisco:ios:15.2\(8\)e4:*:*:*:*:*:*:*15.2(8)e4VulnerableCisco
cpe:2.3:o:cisco:ios:15.2\(8\)e5:*:*:*:*:*:*:*15.2(8)e5VulnerableCisco
  • cpe:2.3:o:cisco:ios:15.2\(8\)e2:*:*:*:*:*:*:* Versions 15.2(8)e2 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios:15.2\(8\)e3:*:*:*:*:*:*:* Versions 15.2(8)e3 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios:15.2\(8\)e4:*:*:*:*:*:*:* Versions 15.2(8)e4 Vulnerable ·Cisco
  • cpe:2.3:o:cisco:ios:15.2\(8\)e5:*:*:*:*:*:*:* Versions 15.2(8)e5 Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-20465
  2. 2026-10-03 Alias added: GHSA-q728-88fr-65v3

References

Advisory 1

  • TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
  • TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
  • TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
See all 617 →

Sources

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