TI-2025-14612 Aliases CVE-2025-20316 GHSA-84gm-4jph-65cm

Improper access control in Cisco IOS XE Software

LOW 30CWE-284Published 2025-09-24 · Updated 2025-09-24

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 XE Software for Cisco Catalyst 9500X and 9600X Series Switches could allow an unauthenticated, remote attacker to bypass a configured ACL on an affected device. This vulnerability is due to the flooding of traffic from an unlearned MAC address on a switch virtual interface (SVI) that has an egress ACL applied. An attacker could exploit this vulnerability by causing the VLAN to flush its MAC address table. This condition can also occur if the MAC address table is full. A successful exploit could allow the attacker to bypass an egress ACL on an affected device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00353 29th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco IOS XE Software	17.7.1; 17.10.1; 17.10.1b; 17.8.1; 17.9.1; 17.9.2; 17.9.3; 17.9.4; 17.9.5; 17.9.4a; 17.9.6; 17.9.6a; 17.9.7; 17.11.1; 17.12.1; 17.12.2; 17.12.3; 17.12.4; 17.12.5; 17.13.1; 17.14.1; 17.15.1; 17.15.2; 17.15.3; 17.15.2b; 17.16.1; 17.17.1	—	No fix listed	CNA

Cisco IOS XE Software VendorCisco Affected 17.7.1; 17.10.1; 17.10.1b; 17.8.1; 17.9.1; 17.9.2; 17.9.3; 17.9.4; 17.9.5; 17.9.4a; 17.9.6; 17.9.6a; 17.9.7; 17.11.1; 17.12.1; 17.12.2; 17.12.3; 17.12.4; 17.12.5; 17.13.1; 17.14.1; 17.15.1; 17.15.2; 17.15.3; 17.15.2b; 17.16.1; 17.17.1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:ios_xe::::::::	—	—	Cisco

cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* Versions — — ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-20316
2026-10-03 Alias added: GHSA-84gm-4jph-65cm

References

Other 1

cisco-sa-cat9k-acl-L4K7VXgD

TI-2026-74174 Arbitrary file write in Cisco Secure Email Gateway via AMP feature KEVCVSS 3.1CRITICAL 9.8
TI-2026-53490 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2026-53489 Cisco Secure Email Gateway SQL Injection Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2026-53488 Cisco Identity Services Engine Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2026-16388 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2026-16344 Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0

See all 7059 →

Sources

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