CVE-2020-24338: Altran Picotcp

Critical severity, CVSS 9.8. EPSS: 37.2% chance of exploitation in the next 30 days.

An issue was discovered in picoTCP through 1.7.0. The DNS domain name record decompression functionality in pico_dns_decompress_name() in pico_dns_common.c does not validate the compression pointer offset values with respect to the actual data present in a DNS response packet, causing out-of-bounds writes that lead to Denial-of-Service and Remote Code Execution.

Affected products

• Altran Picotcp: up to and including 1.7.0

Published 2020-12-11. Last modified 2026-06-17.