CVE-2026-20068

Name
CVE-2026-20068
Description
Multiple Cisco products are affected by a vulnerability in the Snort 3 detection engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection. This vulnerability is due to incomplete error checking when parsing remote procedure call (RPC) data. An attacker could exploit this vulnerability by sending crafted RPC packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.
NVD Severity
unknown
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
psirt@cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwz

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:cisco:snort:*:*:*:*:*:*:*:* snort >= 3.0.0-233 < 3.9.2.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
snort edge-main 3.7.3.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort edge-main 3.7.2.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort edge-main 3.7.1.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort edge-main 3.6.3.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort edge-main 3.6.1.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort edge-main 3.6.0.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort edge-main 3.5.2.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort 3.22-main 3.7.3.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort 3.21-main 3.5.2.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort 3.20-main 3.1.82.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
snort 3.19-main 3.1.73.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable