What’s Vulnerable › Vulnerabilities

CVE-2017-13021

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-09-14 · updated 2026-06-17
• Weakness: CWE-125

Description

The ICMPv6 parser in tcpdump before 4.9.2 has a buffer over-read in print-icmp6.c:icmp6_print().

Affected products

• The Tcpdump Group tcpdump: through 4.9.1

References

• http://www.debian.org/security/2017/dsa-3971
• http://www.securitytracker.com/id/1039307
• http://www.tcpdump.org/tcpdump-changes.txt
• https://access.redhat.com/errata/RHEA-2018:0705
• https://github.com/the-tcpdump-group/tcpdump/commit/67c7126062d59729cd421bb38f9594015c9907ba
• https://security.gentoo.org/glsa/201709-23
• https://support.apple.com/HT208221
• http://www.debian.org/security/2017/dsa-3971
• http://www.securitytracker.com/id/1039307
• http://www.tcpdump.org/tcpdump-changes.txt
• https://access.redhat.com/errata/RHEA-2018:0705
• https://github.com/the-tcpdump-group/tcpdump/commit/67c7126062d59729cd421bb38f9594015c9907ba

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