CVE-2026-121943 | BDVDB-2026-400365 Detail
irontecsngrep
Description#
Irontec sngrep through 1.9.0 contains an out-of-bounds stack read vulnerability in sip_check_packet and sip_validate_packet caused by an off-by-one length check on 10240-byte SIP payloads. Remote attackers can send a crafted UDP or TCP SIP packet or supply a pcap file to crash sngrep or leak adjacent stack bytes into displayed SIP fields.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact low. Attack vector: network.
Weaknesses#
- CWE-170 Improper Null Termination
References#
- https://github.com/irontec/sngrep/issues/589
- https://hackmd.io/@haindpwn/sngrep-sip-payload-missing-nul-oob-read
- https://github.com/irontec/sngrep/blob/v1.9.0/src/sip.c#L396-L410
- https://www.vulncheck.com/advisories/irontec-sngrep-through-1.9.0-out-of-bounds-stack-read-via-sip-check-packet
- https://hackmd.io/@haindpwn/cve-2026-121943-121944-sngrep-sip-payload-missing-nul-oob-read
Exploit#
History#
- Version 1Record published in the CVE List.