Stack-based Buffer Overflow Affecting openwrt package, versions [,24.10.6)[25.12.0-rc1,25.12.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-OPENWRT-15809133
- published29 Mar 2026
- disclosed20 Mar 2026
- creditaxelm-tob
Introduced: 20 Mar 2026
CVE-2026-30872 (opens in a new tab)How to fix?
Upgrade openwrt to version 24.10.6, 25.12.1 or higher.
Overview
Affected versions of this package are vulnerable to Stack-based Buffer Overflow via the match_ipv6_addresses function. An attacker can execute arbitrary code or cause a denial of service by sending a specially crafted PTR query for IPv6 reverse DNS domains (.ip6.arpa) via multicast DNS on UDP port 5353, which results in an out-of-bounds write to a stack buffer due to improper validation of input length.