CVE-2025-8836: JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion

Published Aug 11, 2025
·
Updated

A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpcfloorlog2 of the file src/libjasper/jpc/jpcenc.c of the component JPEG2000 Encoder. The manipulation leads to reachable assertion. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 79185d32d7a444abae441935b20ae4676b3513d4. It is recommended to apply a patch to fix this issue.

Affected Software

2 affected components
Jasper JPEG2000 Encoder<=4.2.5
Jasper Project Jasper<=4.2.5

Remediation

Patch Available

https://github.com/jasper-software/jasper/commit/79185d32d7a444abae441935b20ae4676b3513d4

Event History

Aug 11, 2025
CVE Published
via MITRE·07:32 AM
Data Sourced
via MITRE·07:32 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
Jun 24, 57860
Event
via FIRST·02:19 AM
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Frequently Asked Questions

1

What is the vulnerability severity of CVE-2025-8836?

CVE-2025-8836 has a severity rating that indicates potential risk to affected systems, especially due to local exploitation possibilities.

2

How do I fix CVE-2025-8836?

To mitigate CVE-2025-8836, update to a version of JasPer greater than 4.2.5 that addresses this vulnerability.

3

What component is affected by CVE-2025-8836?

CVE-2025-8836 affects the JPEG2000 Encoder component of JasPer, specifically in the jpc_floorlog2 function.

4

Is CVE-2025-8836 remotely exploitable?

CVE-2025-8836 requires local access for exploitation, making it less of a remote threat.

5

What type of vulnerability is CVE-2025-8836?

CVE-2025-8836 is classified as an assertion failure vulnerability in the JasPer JPEG2000 Encoder.

Company

Resources

Contact

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CVE-2025-8836 - JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion - SecAlerts