Dashboard / CVE-2026-59644

CVE-2026-59644

HIGH
MEDIUM Priority: 0.04 BB Relevance: 77/100
Published: 2026-08-03 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: X
AT: None
VC: None
VI: None
VA: High

Description

In Bouncy Castle for Java before 1.85, MLS hash-ratchet honours arbitrary 32-bit generation counter from sender.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
bouncycastle bc-java < 1.85

References & Advisories (2)

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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:Amber

EPSS — Exploitation Probability

0.49%
Raw Score 0.004930
Percentile 42.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00493
2026-10-28
0.00493

Intelligence Sources

nvd ref →

External Links