vulnerability
Arch Linux: Arbitrary code execution (CVE-2020-25681)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:P/A:C) | Jan 20, 2021 | Jul 11, 2025 | Mar 25, 2026 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:C)
Published
Jan 20, 2021
Added
Jul 11, 2025
Modified
Mar 25, 2026
Description
A heap-based buffer overflow was discovered in dnsmasq before version 2.83 in the way it sorts RRSets before validating them with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause an overflow with arbitrary data in a heap-allocated memory, possibly executing code on the machine.
Solution
arch-linux-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.