CVE-2026-112274

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.

CVSS 4.0

6.3CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-10-19

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://github.com/mfontanini/libtins
• https://github.com/mfontanini/libtins/blob/v4.6/src/dns.cpp#L698-L710
• https://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-read
• https://www.vulncheck.com/advisories/libtins-through-4.6-out-of-bounds-read-via-dns-soa-record-init
• https://hackmd.io/@haindpwn/libtins-dns-name-parsing-oob-read

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