CVE-2022-27942

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

7.8 HighFix available

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

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.11%Up 0.2 points since Mar 27, 2022

What each source reports

NVD Score used 7.8

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

Record: CVE-2022-27942
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-125
Updated: 2026-11-02

CVE List No score

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

Record: CVE-2022-27942
Updated: 2026-11-02

EUVDEUVD-2022-32430 No score

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

Record: EUVD-2022-32430
Updated: 2026-11-03

GitHub AdvisoriesGHSA-343c-9x28-wq5v 7.8

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

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

Record: GHSA-343c-9x28-wq5v
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-787
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-27942 7.8

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

Record: DEBIAN-CVE-2022-27942
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-03

OSV No score

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

Record: CVE-2022-27942
Updated: 2026-11-02

OSVMGASA-2022-0345 No score

Updated tcpreplay packages fix security vulnerability

tcprewrite in Tcpreplay 4.4.1 has a reachable assertion in get_layer4_v6 in common/get.c. (CVE-2022-27939)

tcprewrite in Tcpreplay 4.4.1 has a heap-based buffer over-read in get_ipv6_next in common/get.c. (CVE-2022-27940)

tcprewrite in Tcpreplay 4.4.1 has a heap-based buffer over-read in get_l2len_protocol in common/get.c. (CVE-2022-27941)

tcpprep in Tcpreplay 4.4.1 has a heap-based buffer over-read in parse_mpls in common/get.c. (CVE-2022-27942)

Tcpreplay version 4.4.1 contains a memory leakage flaw in fix_ipv6_checksums() function. The highest threat from this vulnerability is to data confidentiality. (CVE-2022-28487)

The component tcprewrite in Tcpreplay v4.4.1 was discovered to contain a heap-based buffer overflow in get_ipv6_next at common/get.c:713. (CVE-2022-37047)

The component tcprewrite in Tcpreplay v4.4.1 was discovered to contain a heap-based buffer overflow in get_l2len_protocol at common/get.c:344. (CVE-2022-37048)

The component tcpprep in Tcpreplay v4.4.1 was discovered to contain a heap-based buffer overflow in parse_mpls at common/get.c:150. (CVE-2022-37049)

Record: MGASA-2022-0345
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`tcpreplay` Debian:12	before 4.4.2-1	4.4.2-1
`tcpreplay` Debian:13	before 4.4.2-1	4.4.2-1
`tcpreplay` Debian:14	before 4.4.2-1	4.4.2-1
`tcpreplay` Mageia:8 From an advisory covering 8 CVEs	before 4.4.2-1.mga8	4.4.2-1.mga8

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts	OSV
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-27942 is a high vulnerability (CVSS 7.8) in Broadcom Tcpreplay, published March 26, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.11%, the 66th percentile. Fixed in tcpreplay 4.4.2-1.

References

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