High 7.7Published Jun 19, 2026

CVE-2026-48715radvdump's Route Information Option Parser has a Stack Buffer Overflow

Updated under an hour ago (Oct 26, 2026, 1:30 PM ET)

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It affects radvd-project radvdump and 1 other product. Add what you run to find out whether that includes you.

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Every CVE for radvd-project radvdump

Exploited in the last 30 days

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.

CVSS: 7.7 HIGH (v4.0, CNA)CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jun 22, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

radvd-project radvdump radvd_project:radvdump (from the name)	before 2.21	CNA record
radvd.litech radvd radvd.litech:radvd	before 2.21	NVD

References

References

https://github.com/radvd-project/radvd/security/advisories/GHSA-52px-gh9p-m379	x-refsource-confirm, vendor-advisory
https://github.com/radvd-project/radvd/commit/068bde13e3fd6a5fcdb6859e6a2acd293a325dc5	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.