CVE-2026-22187

Bio-Formats <= 8.3.0 Memoizer Unsafe Deserialization via .bfmemo Cache Files

HIGH
7.8
CVSS Score
Published: January 7, 2026 at 08:27 PM UTC
Updated: October 8, 2026 at 04:17 PM UTC
2 products affected across 2 vendorsBio FormatsBio-Formats

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Severity
HIGH7.8
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Technical DescriptionExploitMailing List
Source: cverecord
https://seclists.org/fulldisclosure/2026/Jan/7
ProductRelease Notes
Source: cverecord
https://docs.openmicroscopy.org/bio-formats/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-502

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