Cyber Resilience

CVE-2021-33304

Critical

Published: 15 February 2023

Published
15 February 2023
Modified
20 March 2025
KEV Added
—
Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0101 77.5th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-33304 is a critical-severity Double Free (CWE-415) vulnerability in Altran Picotcp. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 22.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Double Free vulnerability in virtualsquare picoTCP v1.7.0 and picoTCP-NG v2.1 in modules/pico_fragments.c in function pico_fragments_reassemble, allows attackers to execute arbitrary code.

CWE(s)
CWE-415

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

altran
picotcp
1.7.0
altran
picotcp-ng
2.1

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References