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.
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Test your applications- Snyk IDSNYK-UNMANAGED-OPENWRT-15809134
- published29 Mar 2026
- disclosed20 Mar 2026
- creditaxelm-tob
Introduced: 20 Mar 2026
CVE-2026-30871 (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 in the parse_question function when processing PTR queries for reverse DNS domains. An attacker can execute arbitrary code or cause a crash by sending a specially crafted DNS packet to UDP port 5353, exploiting the expansion of non-printable ASCII bytes into an oversized buffer.