HOMEVULNERABILITIESCVE-2019-11230
MEDIUM

CVE-2019-11230

CWE-59Published: July 18, 2019· Updated: Jun 17, 2026

4.4
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2019-11230 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 4.4.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

avast1 product(s)
antivirus
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.mcerlane.co.uk/CVE-2019-11230/
ADVISORYhttp://www.securityfocus.com/bid/109344
ADVISORYhttp://www.mcerlane.co.uk/CVE-2019-11230/
ADVISORYhttp://www.securityfocus.com/bid/109344

All References (4)

→
http://www.mcerlane.co.uk/CVE-2019-11230/Exploit · Third Party Advisory
→
http://www.securityfocus.com/bid/109344Third Party Advisory
→
http://www.mcerlane.co.uk/CVE-2019-11230/Exploit · Third Party Advisory
→
http://www.securityfocus.com/bid/109344Third Party Advisory

Quick Facts

CVE IDCVE-2019-11230
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-59
CISA KEVNo
Affected1 vendor(s)
PublishedJul 18, 2019

Related CVEs (CWE-59)

CVE-2024-28189
10.0
CVE-2024-28185
10.0
CVE-2014-4480
10.0
CVE-2002-2374
10.0
CVE-2026-7374
9.9
CVE-2018-5225
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-11230 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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