Dashboard / CVE-2026-121943

CVE-2026-121943

MEDIUM
MEDIUM Priority: 0.35 BB Relevance: 64/100
Published: 2026-11-04 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: Present
VC: Low
VI: None
VA: Low

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
irontec sngrep 0
irontec sngrep 0

References & Advisories (5)

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

5.55%
Raw Score 0.055510
Percentile 93.0%
Date 2026-11-14

EPSS Trend

2026-11-14
0.05551
2026-11-13
0.05551
2026-11-12
0.05551
2026-11-10
0.05551
2026-11-09
0.05551
2026-11-08
0.05551
2026-11-07
0.05551
2026-11-06
0.05551
2026-11-05
0.05551

Intelligence Sources

mitre ref →
nvd ref →

External Links