CVE-2026-112274
libtins through 4.6 Out-of-Bounds Read via DNS::soa_record::init
- State
- Published
- Severity
- 6.3 Medium
- Published
- Oct 19, 2026
- Updated
- Oct 19, 2026
- Reserved
- Oct 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
libtinslibtins |
|
References
- https://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-readthird-party-advisory
- https://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L698-L710technical-description
- https://github.com/mfontanini/libtinsproduct
- VulnCheck Advisory: libtins through 4.6 Out-of-Bounds Read via DNS::soa_record::initthird-party-advisory
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