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CVE-2022-21147

19
FAUCET Score

CVE-2022-21147 is an out-of-bounds read vulnerability affecting the malware scan functionality of ESTsoft Alyac 2.5.7.7. An attacker can exploit this by providing a specially crafted PE file, leading to a denial of service and termination of the malware scan. Rated 5.5 MEDIUM on CVSS, it requires user interaction (UI:R) and local access (AV:L), with the primary impact being high availability loss (A:H). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2.5.7.7CPE matchmatch criteria
cpe:2.3:a:estsoft:alyac:2.5.7.7:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.0MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.3
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.64%
Probability of exploitation in next 30 days
EPSS Percentile
46.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0064 is in the 52nd percentile among its peer group of 5,758 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

talosintelligence.com / vulnerability_reports/TALOS-2022-1452
ExploitThird Party Advisory
estsecurity.com / public/product/alyac
ProductVendor Advisory