CVE-2024-20322

MEDIUM

5.8

CVSS Score

Published: March 13, 2024 at 04:43 PM UTC

Updated: June 17, 2026 at 07:06 AM UTC

76 products affected across 1 vendorIOS Xr82018202

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Severity

MEDIUM5.8

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

A vulnerability in the access control list (ACL) processing on Pseudowire interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access resources behind the affected device that were supposed to be protected by a configured ACL.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

IOS Xr · Cisco

95%

7.10.2 7.11 7.11.1

cisco-8011-4g24y4h-i (environment) · cisco-8101-32fh (environment) · cisco-8101-32fh-o (environment) · cisco-8101-32h-o (environment) · cisco-8102-28fh-dpu-o (environment) · cisco-8102-64h (environment) · cisco-8102-64h-o (environment) · cisco-8111-32eh-o (environment) · cisco-8122-64eh-o (environment) · cisco-8122-64ehf-o (environment) · cisco-8201 (environment) · cisco-8201-24h8fh (environment) · cisco-8201-32fh (environment) · cisco-8201-32fh-o (environment) · cisco-8202 (environment) · cisco-8202-32fh-m (environment) · cisco-8212-48fh-m (environment) · cisco-8404 (environment) · cisco-8501-sys-mt (environment) · cisco-8608 (environment) · cisco-8700 (environment) · cisco-8711-32fh-m (environment) · cisco-8712-mod-m (environment) · cisco-8804 (environment) · cisco-8808 (environment) · cisco-8812 (environment) · cisco-8818 (environment) · cisco-ncs-540-12z20g-sys-a (environment) · cisco-ncs-540-12z20g-sys-d (environment) · cisco-ncs-540-24q2c2dd-sys (environment) · cisco-ncs-540-24q8l2dd-sys (environment) · cisco-ncs-540-24z8q2c-sys (environment) · cisco-ncs-540-28z4c-sys-a (environment) · cisco-ncs-540-28z4c-sys-d (environment) · cisco-ncs-540-6z14s-sys-d (environment) · cisco-ncs-540-6z18g-sys-a (environment) · cisco-ncs-540-6z18g-sys-d (environment) · cisco-ncs-540-acc-sys (environment) · cisco-ncs-540-fh-agg (environment) · cisco-ncs-540-fh-csr-sys (environment) · cisco-ncs-540x-12z16g-sys-a (environment) · cisco-ncs-540x-12z16g-sys-d (environment) · cisco-ncs-540x-16z4g8q2c-a (environment) · cisco-ncs-540x-16z4g8q2c-d (environment) · cisco-ncs-540x-16z8q2c-d (environment) · cisco-ncs-540x-4z14g2q-a (environment) · cisco-ncs-540x-4z14g2q-d (environment) · cisco-ncs-540x-6z18g-sys-a (environment) · cisco-ncs-540x-6z18g-sys-d (environment) · cisco-ncs-540x-8z16g-sys-a (environment) · cisco-ncs-540x-8z16g-sys-d (environment) · cisco-ncs-540x-acc-sys (environment) · cisco-ncs-5501 (environment) · cisco-ncs-5501-se (environment) · cisco-ncs-5502 (environment) · cisco-ncs-5502-se (environment) · cisco-ncs-5504 (environment) · cisco-ncs-5508 (environment) · cisco-ncs-5516 (environment) · cisco-ncs-55a1-24h (environment) · cisco-ncs-55a1-24q6h-s (environment) · cisco-ncs-55a1-24q6h-ss (environment) · cisco-ncs-55a1-36h (environment) · cisco-ncs-55a1-36h-se (environment) · cisco-ncs-55a1-48q6h (environment) · cisco-ncs-55a2-mod-hd-s (environment) · cisco-ncs-55a2-mod-s (environment) · cisco-ncs-55a2-mod-se-s (environment) · cisco-ncs-560-4 (environment) · cisco-ncs-560-7 (environment) · cisco-ncs-57b1-5dse-sys (environment) · cisco-ncs-57b1-6d24-sys (environment) · cisco-ncs-57c1-48q6-sys (environment) · cisco-ncs-57c3-mod-sys (environment) · cisco-ncs-57d2-18dd-sys (environment)

8011-4G24Y4H-I · Ciscodevice

80%

All versions

8101-32Fh · Ciscodevice

80%

All versions

8101-32Fh-O · Ciscodevice

80%

All versions

8101-32H-O · Ciscodevice

80%

All versions