What is the CVSS score of CVE-2026-22187?

CVE-2026-22187 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Which versions of Java are affected by CVE-2026-22187?

CVE-2026-22187 presents notable security risk, a insecure deserialization vulnerability rated CVSS 7.8.

How to fix or mitigate CVE-2026-22187?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Restrict deserialization to trusted data sources and implement integrity checks.

Java CVE-2026-22187

HIGH

Deserialization of Untrusted Data (CWE-502)

2026-01-07 disclosure@vulncheck.com

GHSA-qjm3-cvp9-3jj3

Java RCE Denial Of Service Deserialization Bio Formats

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 07, 2026 - 21:16 nvd

HIGH 7.8

DescriptionCVE.org

Bio-Formats versions up to and including 8.3.0 perform unsafe Java deserialization of attacker-controlled memoization cache files (.bfmemo) during image processing. The loci.formats.Memoizer class automatically loads and deserializes memo files associated with images without validation, integrity checks, or trust enforcement. An attacker who can supply a crafted .bfmemo file alongside an image can trigger deserialization of untrusted data, which may result in denial of service, logic manipulation, or potentially remote code execution in environments where suitable gadget chains are present on the classpath.

AnalysisAI

Unsafe deserialization in Bio-Formats up to version 8.3.0 allows local attackers to execute arbitrary code or cause denial of service by crafting malicious .bfmemo cache files that are automatically loaded during image processing without validation. The Memoizer class deserializes untrusted data from these files, enabling potential remote code execution if suitable Java gadget chains are available on the classpath. No patch is currently available for this vulnerability (CVSS 7.8).

Technical ContextAI

Classified as CWE-502 (Deserialization of Untrusted Data). Affects the denial of component of Bio-Formats. Bio-Formats versions up to and including 8.3.0 perform unsafe Java deserialization of attacker-controlled memoization cache files (.bfmemo) during image processing. The loci.formats.Memoizer class automatically loads and deserializes memo files associated with images without validation, integrity checks, or trust enforcement. An attacker who can supply a crafted .bfmemo file alongside an image can trigger deserialization of untrusted data, which may result in denial of service, logic manipulatio