Dashboard / CVE-2026-16839

CVE-2026-16839

CRITICAL
INFO Priority: 0.05 BB Relevance: 79/100
Published: 2026-08-19 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

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

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to obtain sensitive information due to an integer underflow in the IPv4 IP-options parser.

Weakness Classification (1)

Affected Software (7)

VendorProductVersion
ibm aix 7.2.5 – 7.2.5.212
ibm aix 7.3.2 – 7.3.2.5
ibm aix 7.3.3 – 7.3.3.2
ibm aix 7.3.4 – 7.3.4.1
ibm vios 4.1.0 – 4.1.0.50
ibm vios 4.1.1.0 – 4.1.1.30
ibm vios 4.1.2.0 – 4.1.2.20

References & Advisories (1)

Bug Bounty Relevance

79 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

EPSS — Exploitation Probability

0.52%
Raw Score 0.005230
Percentile 44.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00523
2026-10-28
0.00523

Intelligence Sources

nvd ref →

External Links