CVE-2020-24339: Altran Picotcp

High severity, CVSS 7.5. EPSS: 2.8% chance of exploitation in the next 30 days.

An issue was discovered in picoTCP and picoTCP-NG 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 reads that lead to Denial-of-Service.

Affected products

• Altran Picotcp: up to and including 1.7.0
• Altran Picotcp-NG: up to and including 1.7.0

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