TI-2021-12789 Aliases CVE-2021-33304 GHSA-rrwx-6mf8-vc3j

Double Free vulnerability in virtualsquare picoTCP v1.7.0 and picoTCP-NG v2.1 in…

MEDIUM 50CWE-415Published 2023-02-15 · Updated 2025-03-20

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00838 58th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:altran:picotcp:1.7.0:::::::*	1.7.0	Vulnerable	Altran
cpe:2.3:a:altran:picotcp-ng:2.1:::::::*	2.1	Vulnerable	Altran

cpe:2.3:a:altran:picotcp:1.7.0:*:*:*:*:*:*:* Versions 1.7.0 Vulnerable ·Altran
cpe:2.3:a:altran:picotcp-ng:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·Altran

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-33304
2026-10-03 Alias added: GHSA-rrwx-6mf8-vc3j

References

Patch 1

https://github.com/virtualsquare/picotcp/issues/6

TI-2020-14887 An issue was discovered in picoTCP through 1.7.0. CVSS 3.1CRITICAL 9.8
TI-2020-13207 An issue was discovered in picoTCP 1.7.0. CVSS 3.1CRITICAL 9.1
TI-2020-14890 An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. CVSS 3.1CRITICAL 9.1
TI-2017-14528 picoTCP (versions 1.7.0 - 1.5.0) is vulnerable to stack buffer overflow resulting in code… CVSS 3.0CRITICAL 9.8
TI-2023-14300 Altran picoTCP through 1.7.0 allows memory corruption (and subsequent denial of service)… CVSS 3.1HIGH 7.5
TI-2020-14889 An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. CVSS 3.1HIGH 7.5

See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences