CVE-2026-48715

UNKNOWN 0.0

radvdump's Route Information Option Parser has a Stack Buffer Overflow

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

radvd is a router advertisement daemon for IPv6. Prior to version 2.21, the `radvdump` utility shipped with radvd contains a stack buffer overflow in the Route Information option parser. When processing a crafted ICMPv6 Router Advertisement, `print_ff()` copies up to 2032 bytes from attacker-controlled packet data into a 16-byte `struct in6_addr` on the stack, overflowing by up to 2016 bytes. Note that the main `radvd` daemon is not affected by the vulnerability. Version 2.21 patches the issue.

CWE	CWE-121
Vendor	radvd-project
Product	radvdump
Published	Jun 19, 2026

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Affected Versions

radvd-project / radvdump

< 2.21

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/radvd-project/radvd/security/advisories/GHSA-52px-gh9p-m379 github.com: https://github.com/radvd-project/radvd/commit/068bde13e3fd6a5fcdb6859e6a2acd293a325dc5