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CVE-2026-22187

25
FAUCET Score

CVE-2026-22187 describes an unsafe Java deserialization vulnerability in Bio-Formats versions up to 8.3.0, affecting the openmicroscopy bio_formats product. An attacker can craft a malicious .bfmemo file, which the loci.formats.Memoizer class automatically deserializes when processing an associated image. This vulnerability carries a CVSS score of 7.8 (High), indicating a local attack vector with low complexity, requiring user interaction, and potentially leading to denial of service, logic manipulation, or remote code execution. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.3.0CPE matchmatch criteria
cpe:2.3:a:openmicroscopy:bio-formats:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.8MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 36th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

mavenGHSA-qjm3-cvp9-3jj3medium

Bio-Formats performs unsafe Java deserialization of attacker-controlled memoization cache files (.bfmemo) during image processing

Jan 7, 2026

References

docs.openmicroscopy.org / bio-formats
Release Notes
seclists.org / fulldisclosure/2026/Jan/7
Mailing List
vulncheck.com / advisories/bio-formats-memoizer-unsafe-deserialization-via-bfmemo-cache-files
Third Party Advisory