CVE-2026-16931

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-08-12 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
ibm i 7.3 – 7.6

References & Advisories (1)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.55%
Raw Score 0.005490
Percentile 45.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00549
2026-10-28
0.00549

Intelligence Sources

nvd ref →