CVE-2026-16560

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 71/100
Published: 2026-07-22 Modified: 2026-11-05 First seen: 2026-11-05 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: Low

Description

A heap-buffer-overflow flaw was found in Directory Server (389-ds-base). When a DN contains a legacy-quoted value, the server won't close the heap allocation allowing another call to refer to the same memory pointer causing a denial of service or an arbitrary memory write operation.

References & Advisories (2)

https://bugzilla.redhat.com/show_bug.cgi?id=2506102
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

71 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploitation Probability

0.40%
Raw Score 0.003960
Percentile 34.4%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00396
2026-11-13
0.00396
2026-11-12
0.00396
2026-11-10
0.00396
2026-11-09
0.00396
2026-11-08
0.00396
2026-11-07
0.00396
2026-11-06
0.00396
2026-11-05
0.00396

Intelligence Sources

mitre ref →
nvd ref →