Vulnerability · Published Oct 19, 2026 · Assigned by VulnCheck
CVE-2026-112274libtins through 4.6 Out-of-Bounds Read via DNS::soa_record::init
Low 3.7
In plain English
A low-severity out-of-bounds read in libtins from libtins. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.5%top 55.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
libtins through 4.6 contains an out-of-bounds read vulnerability in DNS::soa_record::init that allows remote attackers to read past buffer bounds by supplying SOA data lacking NUL terminators. Attackers can feed raw SOA RDATA without a zero byte to applications using the buffer constructor, causing strlen to overrun the heap buffer and possibly crash.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libtins | no fix listed | DEBIAN-CVE-2026-112274 |
| Debian:13 | libtins | no fix listed | DEBIAN-CVE-2026-112274 |
| Debian:14 | libtins | no fix listed | DEBIAN-CVE-2026-112274 |
| Ubuntu:22.04:LTS | libtins | no fix listed | UBUNTU-CVE-2026-112274 |
| Ubuntu:24.04:LTS | libtins | no fix listed | UBUNTU-CVE-2026-112274 |
| Ubuntu:26.04:LTS | libtins | no fix listed | UBUNTU-CVE-2026-112274 |
| Ubuntu:26.10 | libtins | no fix listed | UBUNTU-CVE-2026-112274 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- https://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-read third-party-advisory
- https://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L698-L710 technical-description
- https://github.com/mfontanini/libtins product
- VulnCheck Advisory: libtins through 4.6 Out-of-Bounds Read via DNS::soa_record::init third-party-advisory