Out-of-Bounds Read Flaw in Matthias-Wandel jhead EXIF Parsing Component
CVE-2026-90681

4.8MEDIUM

Key Information:

Vendor

Matthias-wandel

Status
Jhead
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90681?

A vulnerability has been discovered in the Matthias-Wandel jhead software, specifically in the Get16u function located in the exif.c file related to EXIF Parsing. This weakness allows for an out-of-bounds read condition, potentially leading to unauthorized access to sensitive information. The vulnerability requires local access for exploitation, and an exploit has been publicly shared, highlighting the urgency for users to address this issue. Despite being alerted early through an issue report, the developers have yet to respond, raising concerns over timely remediation.

Affected Version(s)

jhead 3.0

jhead 3.1

jhead 3.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-90681 - Proof of Concept

References

https://vuldb.com/vuln/403214
vdb-entrytechnical-description
https://vuldb.com/vuln/403214/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90681
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

fczhang (VulDB User)
VulDB CNA Team
.