MicroWorld eScan Antivirus Quarantine Microworld default permission

published 2025-01-29 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-1871

cvss: 3.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

A vulnerability was found in MicroWorld eScan Antivirus 7.0.32 on Linux. It has been declared as problematic. This vulnerability affects unknown code of the file /var/Microworld/ of the component Quarantine Handler. The manipulation leads to incorrect default permissions. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-29)

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/dmknght/FIS_RnD/blob/main/escan_av_incorrect_default_perms_leads_to_malware_evasion.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CNA	3.0	3.3	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CNA	2.0	1.7	AV:L/AC:L/Au:S/C:N/I:P/A:N
CNA	4.0	4.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/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

Affected products

MicroWorld eScan Antivirus

Classification

Weakness

CWE-276 Incorrect Default Permissions
CWE-266 Incorrect Privilege Assignment

References

github.com /dmknght/FIS_RnD/blob/main/escan_av_incorrect_default_perms_leads_to_malware_evasion.md
exploit, third-party-advisory
vuldb.com /?id.293920
vdb-entry, third-party-advisory
vuldb.com /?ctiid.293920
signature, permissions-required, vdb-entry
vuldb.com /?submit.484329
third-party-advisory, vdb-entry

Sources

CVE List CVE-2025-0797
NVD CVE-2025-0797

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary