What is CVE-2019-18645?

CVE-2019-18645 is a medium-severity vulnerability in Totaldefense Anti-Virus, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2019-10-31.

How severe is CVE-2019-18645?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Totaldefense Anti-Virus

CVE-2019-18645

The quarantine restoration function in Total Defense Anti-virus 11.5.2.28 is vulnerable to symbolic link attacks, allowing files to be written to privileged directories.

Published 2019-10-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Totaldefense Anti-Virus — versions 11.5.2.28

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

github.com/NtRaiseHardError/Antimalware-Research/blob/master/Total Defense/Loca… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-18645?: CVE-2019-18645 is a medium-severity vulnerability in Totaldefense Anti-Virus, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2019-10-31.
How severe is CVE-2019-18645?: Medium severity. CVSS v3 base score is 5.5 out of 10.