CVE-2019-13355: In Total Defense Anti-virus 9.0.0.773, insecure access control for the directory %PROGRAMDATA%\TotalDefense\Co

This month

HIGH 7.8DOWNGRADE

CVE-2019-13355 is a high-severity flaw (CVSS 7.8) affecting anti-virus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Total Defense Anti-virus 9.0.0.773, insecure access control for the directory %PROGRAMDATA%\TotalDefense\Consumer\ISS\9\ used by ccschedulersvc.exe allows local attackers to hijack dotnetproxy.exe, which leads to privilege escalation when the ccSchedulerSVC service runs the executable.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-732
Published	2019-09-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: totaldefense

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-09-24 15:15 UTCPublished CVE record published
2026-06-17 02:16 UTCUpdated Record last modified

totaldefense anti-virus DOWNGRADE

Affected: 9.0.0.773

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.0.0.773

1. Check installed version

apt-cache policy anti-virus || rpm -q anti-virus || anti-virus --version

2. No fixed release: DOWNGRADE to a release before 9.0.0.773 (Debian / Ubuntu)

apt-cache madison anti-virus sudo apt install anti-virus=<VERSION_BEFORE_9.0.0.773> sudo apt-mark hold anti-virus

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list anti-virus sudo dnf downgrade anti-virus-<VERSION_BEFORE_9.0.0.773> sudo dnf versionlock add anti-virus

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-13355?

anti-virus: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-13355 being exploited?

CVE-2019-13355 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-13355 affect?

CVE-2019-13355 affects anti-virus. Severity is high (CVSS 7.8). In Total Defense Anti-virus 9.0.0.773, insecure access control for the directory %PROGRAMDATA%\TotalDefense\Consumer\ISS\9\ used by ccschedulersvc.exe allows local attackers to hijack dotnetproxy.exe, which leads to privilege escalation whe

How urgent is CVE-2019-13355?

Priority 40/100. High severity; Public exploit reference

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References

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