CVE-2025-8836— JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion
Quick assessment
Affected
n/a JasPer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Jasper是Jasper开源的一个灵活且强大的 GitHub 问题阅读器。 JasPer 4.2.5及之前版本存在安全漏洞，该漏洞源于jpc_floorlog2函数存在可达断言。
Possible ATT&CK Techniques 1 AI
T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2025-8836
Vulnerability Information
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Vulnerability Title
JasPer JPEG2000 Encoder jpc_enc.c jpc_floorlog2 assertion
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
JasPer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jasper是Jasper开源的一个灵活且强大的 GitHub 问题阅读器。 JasPer 4.2.5及之前版本存在安全漏洞，该漏洞源于jpc_floorlog2函数存在可达断言。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | JasPer | 4.2.0 | - |
|
II. Public POCs for CVE-2025-8836
| # | POC Description | Source Link | Shenlong Link |
|---|
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News Coverage for CVE-2025-8836 (1)
Same Patch Batch · n/a · 2025-08-11 · 9 CVEs total
| CVE-2025-8839 | 6.3 MEDIUM | jshERP Endpoint addUser improper authorization |
| CVE-2025-8840 | 5.4 MEDIUM | jshERP Endpoint deleteBatch improper authorization |
| CVE-2025-8837 | 5.3 MEDIUM | JasPer JPEG2000 File jpc_dec.c jpc_dec_dump use after free |
| CVE-2025-8851 | 5.3 MEDIUM | LibTIFF tiffcrop tiffcrop.c readSeparateStripsetoBuffer stack-based overflow |
| CVE-2025-8835 | 3.3 LOW | JasPer Image Color Space Conversion jas_image.c jas_image_chclrspc null pointer dereferenc |
| CVE-2025-45146 | ModelCache 安全漏洞 | |
| CVE-2025-51823 | GNU libcdio 安全漏洞 | |
| CVE-2025-51824 | GNU libcdio 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2025-8836
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