CVE-2020-24337

Name: CVE-2020-24337
Creator: NVD / NIST
Published: 2020-12-11T23:15:13.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.82%

Last modified Jun 17, 2026

CVE-2020-24337 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. When an unsupported TCP option with zero length is provided in an incoming TCP packet, it is possible to cause a Denial-of-Service by achieving an infinite loop in the code that parses TCP options, aka tcp_parse_options() in pico_tcp.c.. EPSS estimates a 2.82% chance of exploitation in the next 30 days.

Description

An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. When an unsupported TCP option with zero length is provided in an incoming TCP packet, it is possible to cause a Denial-of-Service by achieving an infinite loop in the code that parses TCP options, aka tcp_parse_options() in pico_tcp.c.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.82%

84.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-835

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-2020-24337?

How severe is CVE-2020-24337?

CVE-2020-24337 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.82% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24337?

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-2020-24337?

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

Scan your code now

Source: NVD / NIST