---
title: "CVE-2026-85532: Apache WSS4J - Weak Cryptography & Denial of Service"
description: "Apache WSS4J contains a cryptographic weakness caused by accepting attacker-controlled derived-key lengths and offsets without adequate bounds, letting attackers cause weak keys or resource exhaustion, exploit requires crafted WS-Security messages."
url: https://panop.io/threat-heartbeat/CVE-2026-85532/
---

# CVE-2026-85532 Apache WSS4J - Weak Cryptography & Denial of Service

Apache WSS4J contains a cryptographic weakness caused by accepting attacker-controlled derived-key lengths and offsets without adequate bounds, letting attackers cause weak keys or resource exhaustion, exploit requires crafted WS-Security messages.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.55% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-85532)

## Details

Type

Weak Cryptography

Impact

Denial Of Service, Weak Cryptography

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

30 September 2026

Updated

15 October 2026

Weakness

[CWE-20](https://cwe.mitre.org/data/definitions/20.html)

## Vendor fix

Upgrade to versions 4.0.2, 3.0.6, or 2.4.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-85532](https://nvd.nist.gov/vuln/detail/CVE-2026-85532)
- [https://lists.apache.org/thread.html/7jllcpbf4nbzhdp2vchz5yplnl5w6vd6](https://lists.apache.org/thread.html/7jllcpbf4nbzhdp2vchz5yplnl5w6vd6)
- [http://www.openwall.com/lists/oss-security/2026/09/30/8](http://www.openwall.com/lists/oss-security/2026/09/30/8)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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