Academy Software Foundation OpenEXR EXR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Academy Software Foundation OpenEXR. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of EXR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27947.
Conclusion & alert: CVE-2025-12839 is rated Low Risk (34.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.03%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-10 | 0.05% | 0.03% | -0.02% |
| 2 | 2026-01-24 | 0.04% | 0.05% | +0.01% |
| 3 | 2025-12-24 | — | 0.04% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-12839: 1 source package rows (openexr); 25 state rows across 3 repos (3.22-community, 3.23-community, edge-community); fixed 0, open 25. | https://security.alpinelinux.org/vuln/CVE-2025-12839 |
debian
|
not yet assigned | CVE-2025-12839 not yet assigned priority: Debian including 1 source packages (openexr), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2025-12839 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-12839 |
suse
|
high | CVE-2025-12839 severity important: SUSE including 40 source package names (OpenEXR, libIex-3_2-31-3.2.2-160000.4.1, …), 150 product×package rows across 29 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (29 product lines)): Known Not Affected 83, Fixed 55, First Fixed 12. | https://www.suse.com/security/cve/CVE-2025-12839/ |
ubuntu
|
medium | CVE-2025-12839 medium priority: Ubuntu including 1 source packages (openexr), 8 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): not-affected 4, needed 2, ignored 1, released 1. | https://ubuntu.com/security/CVE-2025-12839 |
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-25-990/ | Third Party Advisory |