CVE-2020-24341

Name: CVE-2020-24341
Creator: NVD / NIST
Published: 2020-12-11T23:15:14.153+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 4.89%

Last modified Jun 17, 2026

CVE-2020-24341 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The TCP input data processing function in pico_tcp.c does not validate the length of incoming TCP packets, which leads to an out-of-bounds read when assembling received packets into a data segment, eventually causing Denial-of-Service or an information leak.. EPSS estimates a 4.89% chance of exploitation in the next 30 days.

Description

An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The TCP input data processing function in pico_tcp.c does not validate the length of incoming TCP packets, which leads to an out-of-bounds read when assembling received packets into a data segment, eventually causing Denial-of-Service or an information leak.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

4.89%

91.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Altran	Picotcp	<= 1.7.0
Altran	Picotcp-Ng	<= 1.7.0

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
https://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource

Timeline

Published: Dec 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-24341?

How severe is CVE-2020-24341?

CVE-2020-24341 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 4.89% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24341?

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.

Are you affected by CVE-2020-24341?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST