CVE-2019-11230 json
In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log…
published 2019-07-18 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-2929
- cvss
- 4.4
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
In Avast Antivirus before 19.4, a local administrator can trick the product into renaming arbitrary files by replacing the Logs\Update.log file with a symlink. The next time the product attempts to write to the log file, the target of the symlink is renamed. This defect can be exploited to rename a critical product file (e.g., AvastSvc.exe), causing the product to fail to start on the next system restart.
Patch / fix
- avast antivirus 19.4
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- mcerlane.co.uk http://www.mcerlane.co.uk/CVE-2019-11230/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 3.6 | AV:L/AC:L/Au:N/C:N/I:P/A:P |
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
mcerlane.co.uk
/CVE-2019-11230/
exploit, third-party-advisory
-
securityfocus.com
/bid/109344
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2019-11230
- NVD CVE-2019-11230
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.