TI-2025-08087 Aliases CVE-2025-8836 GHSA-hvcg-67f3-52cf

JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion

MEDIUM 55CWE-617Published 2025-08-11 · Updated 2025-08-12

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-617.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00227 13th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD and the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	JasPer	4.2.0; 4.2.1; 4.2.2; 4.2.3; 4.2.4; 4.2.5	—	No fix listed	CNA

JasPer Vendor— Affected 4.2.0; 4.2.1; 4.2.2; 4.2.3; 4.2.4; 4.2.5 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:jasper_project:jasper::::::::	up to 4.2.5	Vulnerable	The Jasper Project

cpe:2.3:a:jasper_project:jasper:*:*:*:*:*:*:*:* Versions up to 4.2.5 Vulnerable ·The Jasper Project

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-8836
2026-10-03 Alias added: GHSA-hvcg-67f3-52cf

References

Exploit 2

Patch 1

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

TI-2022-02737 Memory leak in jasper CVSS 3.1HIGH 7.5
TI-2023-27963 An invalid memory write issue in Jasper-Software Jasper v.4.1.1 and before allows a local… CVSS 3.1HIGH 7.8
TI-2025-08088 JasPer JPEG2000 File jpc_dec.c jpc_dec_dump use after free CVSS 4.0MEDIUM 4.8
TI-2025-08086 JasPer Image Color Space Conversion jas_image.c jas_image_chclrspc null pointer dereference CVSS 4.0MEDIUM 4.8
TI-2014-06753 Heap-based buffer overflow in the jp2_decode function in JasPer 1.900.1 and earlier… CVSS 2.0HIGH 7.5
TI-2014-07355 Multiple off-by-one errors in the (1) jpc_dec_cp_setfromcox and (2) jpc_dec_cp_setfromrgn… CVSS 2.0HIGH 7.5

See all 100 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences