Dashboard / CVE-2026-34543

CVE-2026-34543

HIGH
MEDIUM Priority: 0.04 BB Relevance: 78/100
Published: 2026-04-01 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: High
VI: None
VA: None

Description

OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). This occurs under default settings; simply reading a malicious EXR file is sufficient to trigger the issue, without any user interaction. This issue has been patched in version 3.4.8.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
openexr openexr 3.2.0 – 3.2.7
openexr openexr 3.3.0 – 3.3.9
openexr openexr 3.4.0 – 3.4.8

References & Advisories (3)

Bug Bounty Relevance

78 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.50%
Raw Score 0.005010
Percentile 42.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00501
2026-10-28
0.00482

Intelligence Sources

nvd ref →

External Links