Cyber Resilience

CVE-2026-48715

HighUpdated

Published: 19 June 2026

Published
19 June 2026
Modified
26 June 2026
KEV Added
—
Patch
—
CVSS Score v4 7.7 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0020 10.4th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-48715 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Radvd.Litech Radvd. Its CVSS base score is 7.7 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 10.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

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(s)
CWE-121

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
Why these techniques?

Stack buffer overflow in local radvdump utility enables arbitrary code execution on crafted ICMPv6 input, directly supporting local privilege escalation via exploitation.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

Affected Assets

radvd.litech
radvd
≤ 2.21

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References