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Vulnerabilities

Vulnerability · CVE-2026-87825

zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be

Published Sep 9, 2026 · catalog updated Oct 18, 2026 · zstd-jni before 1.5.7-14 contains

Check if you run it

No confirmed exploitation is on record for CVE-2026-87825. EPSS is 0.20%. Act only if a listed version of zstd-jni before 1.5.7-14 contains is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (zstd-jni before 1.5.7-14 contains).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Advisory link
Affected products
Debian:12 zstd-jni-java · Debian:13 zstd-jni-java · Debian:14 zstd-jni-java

zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream or context, causing subsequent read or write operations to access freed native memory, resulting in silent data corruption or JVM crashes.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 zstd-jni-java1.5.2-5+ds-3, 1.5.2-5+ds-4, 1.5.2-5+ds-5
  • Debian:13 zstd-jni-java1.5.2-5+ds-7, 1.5.2-5+ds-8, 1.5.4-2+ds-1
  • Debian:14 zstd-jni-java0 → 1.5.7-23+ds-1

How to fix CVE-2026-87825

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-87825. EPSS is 0.20%. Act only if a listed version of zstd-jni before 1.5.7-14 contains is installed.

Which versions are affected?

Compare what you have installed with 1.5.2-5+ds-3, 1.5.2-5+ds-4, 1.5.2-5+ds-5, 1.5.2-5+ds-7, 1.5.2-5+ds-8, 1.5.4-2+ds-1, 0 → 1.5.7-23+ds-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 9, 2026 · Trivy Vulnerability DB

    Detected

    zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream or context, causing subsequent read or write operations to access freed native memory, resulting in silent data corrupti

  2. Oct 18, 2026 · Trivy Vulnerability DB

    Fix available

    zstd-jni-java fixed in 1.5.7-23+ds-1

  3. Oct 18, 2026 · Trivy Vulnerability DB

    Fix available

    zstd-jni-java fixed in 1.5.7-23+ds-1

  4. Oct 18, 2026 · Trivy Vulnerability DB

    Updated

    zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream or context, causing subsequent read or write operations to access freed native memory, resulting in silent data corrupti

Sources

  • CVE.orgVulnerability recordCVE-2026-87825

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-87825

    30-day exploitation probability 0.2%

    first.org
  • Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-87825

    zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream

    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.