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Vulnerability details: VCID-3e3b-z5bh-pban
Vulnerability ID VCID-3e3b-z5bh-pban
Aliases CVE-2020-10030
Summary An issue has been found in PowerDNS Recursor 4.1.0 up to and including 4.3.0. It allows an attacker (with enough privileges to change the system's hostname) to cause disclosure of uninitialized memory content via a stack-based out-of-bounds read. It only occurs on systems where gethostname() does not have '\0' termination of the returned string if the hostname is larger than the supplied buffer. (Linux systems are not affected because the buffer is always large enough. OpenBSD systems are not affected because the returned hostname always has '\0' termination.) Under some conditions, this issue can lead to the writing of one '\0' byte out-of-bounds on the stack, causing a denial of service or possibly arbitrary code execution.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk None
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2020-10030
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-10030
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10030
No exploits are available.
There are no known vectors.
Exploit Prediction Scoring System (EPSS)
Percentile 0.08041
EPSS Score 0.00029
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:33:59.532824+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0