What’s Vulnerable › Vulnerabilities

CVE-2020-17443

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-11 · updated 2026-06-17
• Weakness: CWE-190

Description

An issue was discovered in picoTCP 1.7.0. The code for creating an ICMPv6 echo replies doesn't check whether the ICMPv6 echo request packet's size is shorter than 8 bytes. If the size of the incoming ICMPv6 request packet is shorter than this, the operation that calculates the size of the ICMPv6 echo replies has an integer wrap around, leading to memory corruption and, eventually, Denial-of-Service in pico_icmp6_send_echoreply_not_frag in pico_icmp6.c.

Affected products

• Altran Picotcp: through 1.7.0

References

• https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
• https://www.kb.cert.org/vuls/id/815128
• https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
• https://www.kb.cert.org/vuls/id/815128

Get alerted when CVE-2020-17443 or the next vulnerability affects your stack