MicroWord eScan Antivirus USB Protection Service passPrompt stack-based overflow

published 2025-02-16 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-2122

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits: 0; none known

A vulnerability has been found in MicroWord eScan Antivirus 7.0.32 on Linux and classified as critical. Affected by this vulnerability is the function passPrompt of the component USB Protection Service. The manipulation leads to stack-based buffer overflow. It is possible to launch the attack on the local host. 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: none
Automatable: no
Technical impact: partial
Assessed: 20 mo ago (2025-02-18)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/dmknght/FIS_RnD/blob/main/escan_av_usb_protection_multiple_vulns.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:L/VI:L/VA:L/SC:N/SI:N/SA:N
CNA	3.1	5.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	3.0	5.3	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	4.3	AV:L/AC:L/Au:S/C:P/I:P/A:P
CNA	4.0	4.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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
NVD	3.1	6.6	CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

MicroWord eScan Antivirus

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

github.com /dmknght/FIS_RnD/blob/main/escan_av_usb_protection_multiple_vulns.md
exploit, third-party-advisory
vuldb.com /?id.295969
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.295969
signature, permissions-required, vdb-entry
vuldb.com /?submit.496481
third-party-advisory, vdb-entry

Sources

CVE List CVE-2025-1364
NVD CVE-2025-1364

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