Service interruption via undisclosed ImageLib flaw
Published Jun 16, 2026 · Updated Jun 16, 2026
Denial-of-service in Mozilla ImageLib affects Firefox before 152 and Thunderbird before 152, allowing remote attackers to interrupt service. Mozilla has not published the faulty ImageLib operation or the input condition that triggers resource exhaustion. Exploitation requires user interaction, and the published assessment limits the consequence to service interruption without data disclosure or modification.
Summary
What happened
Denial-of-service in Mozilla ImageLib affects Firefox before 152 and Thunderbird before 152, allowing remote attackers to interrupt service. Mozilla has not published the faulty ImageLib operation or the input condition that triggers resource exhaustion. Exploitation requires user interaction, and the published assessment limits the consequence to service interruption without data disclosure or modification.
The record
- CVE
- CVE-2026-12325
- Published
- Jun 16, 2026
- Updated
- Jun 16, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-400, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 16, 2026CVE publishedPublication date reported by the CVE source.
- Jun 16, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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.
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
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo