What is CVE-2025-8836?

CVE-2025-8836 is a low-severity vulnerability in Jasper Project, classified under Reachable Assertion. CVSS score: 3.3/10. Published 2025-08-11.

How severe is CVE-2025-8836?

Low severity. CVSS v3 base score is 3.3 out of 10.

Is CVE-2025-8836 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Jasper Project

CVE-2025-8836

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.

Published 2025-08-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.002 (9.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Jasper Project
Jasper — versions 4.2.0, 4.2.1, 4.2.2

Weakness classification (CWE)

CWE-617 — Reachable Assertion

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
vuldb.com/ (Exploit, VDB Entry, Third Party Advisory, third-party-advisory)
github.com/jasper-software/jasper/issues/401 (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
drive.google.com/file/d/1pPgndhHh2z0lk99Wt31W-XIW3XWt8FB3/view (Exploit, exploit)
github.com/jasper-software/jasper/commit/79185d32d7a444abae441935b20ae4676b3513… (Patch, patch)

Frequently asked questions

What is CVE-2025-8836?: CVE-2025-8836 is a low-severity vulnerability in Jasper Project, classified under Reachable Assertion. CVSS score: 3.3/10. Published 2025-08-11.
How severe is CVE-2025-8836?: Low severity. CVSS v3 base score is 3.3 out of 10.
Is CVE-2025-8836 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.