CVE-2026-87779Hinoki check available

AES secret-key disclosure via padded-key logging

Published Sep 14, 2026 · Updated Sep 14, 2026

Sensitive-data logging in affected Apache Syncope releases allows local users with log access to obtain the effective AES secret key. DefaultEncryptorManager right-pads a nonstandard-length security.aesSecretKey with random characters and writes the resulting key value to the application log. The flaw requires a key whose length is not 16, 24, or 32 bytes and affects 3.0.15 through 3.0.16, 4.0.3 through 4.0.7, and 4.1.0-M0 through 4.1.2; disclosure exposes the key used for reversible encryption.

CVSS severityUnavailable
Unscored
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Sensitive-data logging in affected Apache Syncope releases allows local users with log access to obtain the effective AES secret key. DefaultEncryptorManager right-pads a nonstandard-length security.aesSecretKey with random characters and writes the resulting key value to the application log. The flaw requires a key whose length is not 16, 24, or 32 bytes and affects 3.0.15 through 3.0.16, 4.0.3 through 4.0.7, and 4.1.0-M0 through 4.1.2; disclosure exposes the key used for reversible encryption.

The record

CVE
CVE-2026-87779
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
The Apache Software Foundation
Product
Apache Syncope
Classifications
CWE-532, T1552.001
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.15 <=3.0.16
  2. Affected versionversion=4.0.3 <=4.0.7
  3. Affected versionversion=4.1.0-M0 <=4.1.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache Syncopeversion=3.0.15 <=3.0.16; version=4.0.3 <=4.0.7; version=4.1.0-M0 <=4.1.2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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