ZDI-26-360: MATE Desktop Atril Document Viewer EPUB File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability
Source Zero Day Initiative
Not known to be exploited · fixed in 1.28.6 : patch affected systems soon.
Data as of 10 Jul 2026, 13:26 UTC
Rated High by Zero Day Initiative · No CVSS score from NVD or the CNA
- Patch
- Available – fixed in 1.28.6, 1.26.4
Exploitation evidence
Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
Apply the official fixes by upgrading Atril Document Viewer to version 1.26.4 or later, or 1.28.6 or later. These versions contain patches that address the heap-based buffer overflow vulnerability. No other mitigation is required as the vulnerability is fixed in these releases.
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of MATE Desktop Atril Document Viewer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-52849.