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TI-2022-05550 Aliases CVE-2022-21147GHSA-6r55-j877-x6cq

Out-of-bounds read in ESTsoft Alyac

Priority MEDIUM 58CWE-823Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

An out of bounds read vulnerability exists in the malware scan functionality of ESTsoft Alyac 2.5.7.7. A specially-crafted PE file can trigger this vulnerability to cause denial of service and termination of malware scan. An attacker can provide a malicious file to trigger this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0067 52nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ESTsoftAlyac2.5.7.7—No fix listedCNA
  • Alyac VendorESTsoft Affected 2.5.7.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:estsoft:alyac:2.5.7.7:*:*:*:*:*:*:*2.5.7.7VulnerableESTsoft
  • cpe:2.3:a:estsoft:alyac:2.5.7.7:*:*:*:*:*:*:* Versions 2.5.7.7 Vulnerable ·ESTsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-21147
  2. 2026-10-03 Alias added: GHSA-6r55-j877-x6cq

References

Exploit 1

Advisory 1

  • TI-2022-14174 Integer overflow in ESTsoft Alyac CVSS 3.1HIGH 7.8
  • TI-2022-12241 Integer overflow in ESTsoft Alyac CVSS 3.1HIGH 7.8
  • TI-2022-21429 A denial of service vulnerability exists in the malware scan functionality of ESTsoft… CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences