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TI-2017-05872 Aliases CVE-2017-8307GHSA-7gqh-6434-f3jx

In Avast Antivirus before v17, using the LPC interface API exposed by the AvastSVC.exe…

Priority MEDIUM 46Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

In Avast Antivirus before v17, using the LPC interface API exposed by the AvastSVC.exe Windows service, it is possible to launch predefined binaries, or replace or delete arbitrary files. This vulnerability is exploitable by any unprivileged user when Avast Self-Defense is disabled. It is also exploitable in conjunction with CVE-2017-8308 when Avast Self-Defense is enabled. The vulnerability allows for Denial of Service attacks and hiding traces of a possible attack.

Why it matters now

EPSS 0.01781 78th 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

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:*up to 12.3.2279VulnerableAvast
  • cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:* Versions up to 12.3.2279 Vulnerable ·Avast

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-8307
  2. 2026-10-03 Alias added: GHSA-7gqh-6434-f3jx

References

Exploit 1

  • TI-2020-08753 An issue was discovered in Avast Antivirus before 20. CVSS 3.1CRITICAL 9.8
  • TI-2025-03074 Integer Overflow in Avast Antiviurs 25.1.981.6 on Windows may result in privilege escalation CVSS 3.1CRITICAL 9.8
  • TI-2025-11929 Time-of-check time-of-use race condition in Avast Antivirus CVSS 3.1CRITICAL 9.9
  • TI-2021-20488 Privilege escalation vulnerability in the Self-Defense driver of Avast Antivirus prior to… CVSS 3.1HIGH 8.8
  • TI-2021-20487 Privilege escalation vulnerability in the Sandbox component of Avast Antivirus prior to… CVSS 3.1HIGH 8.8
  • TI-2021-20486 Sandbox component in Avast Antivirus prior to 20.4 has an insecure permission which could… CVSS 3.1HIGH 8.8
See all 31 →

Sources

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