Dashboard / CVE-2026-121944

CVE-2026-121944

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 39/100
Published: 2026-11-04 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
S: X
AT: None
VC: None
VI: None
VA: High

Description

sngrep through 1.9.0 contains an infinite loop vulnerability in capture_packet_reasm_ip() in src/capture.c that allows attackers to cause denial of service via crafted NFLOG TLVs. Attackers can supply a pcap file with link type NFLOG containing a non-payload TLV with length under 4, making the capture thread spin at full CPU and stop processing packets.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
irontec sngrep 0
irontec sngrep 0

References & Advisories (5)

Bug Bounty Relevance

39 / 100
✓ No authentication
✓ Low complexity

CVSS Score

6.8 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/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

0.24%
Raw Score 0.002370
Percentile 14.9%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00237
2026-11-13
0.00237
2026-11-12
0.00237
2026-11-10
0.00237
2026-11-09
0.00237
2026-11-08
0.00237
2026-11-07
0.00237
2026-11-06
0.00237
2026-11-05
0.00237

Intelligence Sources

mitre ref →
nvd ref →

External Links