CVE-2021-33304
CRITICALCVSS 9.8/10EPSS 0.84%
Last modified
CVE-2021-33304 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Altran | Picotcp | 1.7.0 |
| Altran | Picotcp-Ng | 2.1 |
References
- https://github.com/virtualsquare/picotcp/issues/6Issue Tracking, Patch, Vendor Advisory
- https://github.com/virtualsquare/picotcp/issues/6Issue Tracking, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33304?
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.
How severe is CVE-2021-33304?
CVE-2021-33304 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33304?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-33304?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST