Bug 2566875 (CVE-2026-121943) - CVE-2026-121943 sngrep: sngrep: Denial of Service via crafted SIP packet
Summary: CVE-2026-121943 sngrep: sngrep: Denial of Service via crafted SIP packet
Keywords:
Status: NEW
Alias: CVE-2026-121943
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2567239
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-04 13:11 UTC by OSIDB Bzimport
Modified: 2026-11-05 11:27 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-11-04 13:11:28 UTC 
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.
Note You need to log in before you can comment on or make changes to this bug.