How severe is CVE-2021-41043?

CVE-2021-41043 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-41043 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41043?

CVE-2021-41043 affects Tcpdump Tcpslice. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41043?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-41043 published?

CVE-2021-41043 was published on 2022-01-05 and last updated on 2026-06-17.

CVE-2021-41043

CVE-2021-41043 is a medium-severity vulnerability in Tcpdump Tcpslice with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Tcpdump Tcpslice
Published: 2022-01-05
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-41043?: Use after free in tcpslice triggers AddressSanitizer, no other confirmed impact.
How severe is CVE-2021-41043?: CVE-2021-41043 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-41043 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41043?: CVE-2021-41043 affects Tcpdump Tcpslice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41043?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41043 published?: CVE-2021-41043 was published on 2022-01-05 and last updated on 2026-06-17.

References

https://github.com/the-tcpdump-group/tcpslice/issues/11

Affected products (1)

cpe:2.3:a:tcpdump:tcpslice:*:*:*:*:*:*:*:*

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