tcprewrite in Tcpreplay 4.4.1 has a heap-based buffer over-read in get_l2len_protocol in common/get.c.

published 2022-03-26 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-32429

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

Patch / fix

distros 1

tcpreplay Debian 14, Debian 13, Debian 12 4.4.2-1

debian advisories DEBIAN-CVE-2022-27941

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-27941 updated 2026-01-08 cvss 7.8

tcpreplay: tcprewrite in Tcpreplay 4.4.1 has a heap-based buffer over-read in get_l2len_protocol in common/get.c.

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/appneta/tcpreplay/issues/716 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-125 Out-of-bounds Read

References

github.com /appneta/tcpreplay/issues/716
exploit, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/ECRCFJ6X3IVB7BT4KS6AHQMSL532YXYD/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/5B75AFRJUGOYHCFG2ZV2JKSUPA6MSCT5/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/JWRZO7BG6DHA5NAC3COB45WFXLYRIERC/
vendor-advisory
security.gentoo.org /glsa/202210-08
vendor-advisory, third-party-advisory

Sources

CVE List CVE-2022-27941
NVD CVE-2022-27941

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary