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CVE-2025-8836

JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion

LOW
3.3
CVSS Score
Published: August 11, 2025 at 07:32 AM UTC
Updated: June 17, 2026 at 10:07 AM UTC
1 product affected across 1 vendorJasper

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Severity
LOW3.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A vulnerability was determined in JasPer up to 4.2.5. Affected by this issue is the function jpc_floorlog2 of the file src/libjasper/jpc/jpc_enc.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

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. What the record does show:

Patch and advisory references

References (6)

Exploit
Source: [email protected]
https://drive.google.com/file/d/1pPgndhHh2z0lk99Wt31W-XIW3XWt8FB3/view?usp=drive_link
Patch
Source: [email protected]
https://github.com/jasper-software/jasper/commit/79185d32d7a444abae441935b20ae4676b3513d4
Issue TrackingExploitVendor Advisory
Source: [email protected]
https://github.com/jasper-software/jasper/issues/401
SignaturePermissions RequiredVDB Entry
Source: [email protected]
https://vuldb.com/?ctiid.319370
VDB EntryTechnical DescriptionThird Party Advisory
Source: [email protected]
https://vuldb.com/?id.319370
Third Party AdvisoryExploitVDB Entry
Source: [email protected]
https://vuldb.com/?submit.622409

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

3.3LOWVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-617

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