Public proof of conceptFix available

CVE-2023-44452

A public proof of concept exists; no exploitation attested.

Published2024-05-03
WeaknessCWE-88

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Linux Mint Xreader CBT File Parsing Argument Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Mint Xreader. 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 CBT files. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-22132.

Timeline

dates in UTC

2024-05-0303:16CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-44452?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-44452?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

CISA-ADP · NVD

Linuxmint

Branch	Affected	Fixed in	Source
3.8	= 3.8.2	no fix published	CISA-ADP

Linuxmint xreader

Branch	Affected	Fixed in	Source
3.8	= 3.8.2	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

github.comPatch

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedfebinrev/atril_cbt-inject-exploit

Sources

CISA-ADPSSVC decisionnone2024-05-16
OpenCVESSVC decisionnone—
NVDCVSS 3.17.8read 2026-10-23
CNACVSS 3.07.8read 2026-10-23
CNAweakness (CWE)CWE-88read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2024-05-03
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2023-44452?

Is CVE-2023-44452 actively exploited?

Active exploitation of CVE-2023-44452 has not been confirmed. Its EPSS score was 1.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-44452?

CVE-2023-44452 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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