What is CVE-2021-41043?

CVE-2021-41043 is a medium-severity vulnerability in Tcpdump Tcpslice, classified under Use After Free. CVSS score: 5.5/10. Published 2022-01-05.

How severe is CVE-2021-41043?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Use After Free in Tcpdump Tcpslice

CVE-2021-41043

Use after free in tcpslice triggers AddressSanitizer, no other confirmed impact.

Vulnerability class: Use-After-Free

Published 2022-01-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: -0.000

Affected products

Tcpdump Tcpslice
The Tcpdump Group Tcpslice — versions unspecified

Weakness classification (CWE)

CWE-416 — Use After Free

References

github.com/the-tcpdump-group/tcpslice/issues/11 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-41043?: CVE-2021-41043 is a medium-severity vulnerability in Tcpdump Tcpslice, classified under Use After Free. CVSS score: 5.5/10. Published 2022-01-05.
How severe is CVE-2021-41043?: Medium severity. CVSS v3 base score is 5.5 out of 10.