CVE-2023-53973: Zillya Total Security 3.0.2367.0 contains a privilege escalation vulnerability that allows low-privileged user

Routine

HIGH 8.4DOWNGRADE

CVE-2023-53973 is a high-severity flaw (CVSS 8.4) affecting total security. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Zillya Total Security 3.0.2367.0 contains a privilege escalation vulnerability that allows low-privileged users to copy files to unauthorized system locations using the quarantine module. Attackers can leverage symbolic link techniques to restore quarantined files to restricted directories, potentially enabling system-level access through techniques like DLL hijacking.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-59
Published	2025-12-22
Last modified	2026-10-28

Publisher (CNA): VulnCheck · Vendor: zillya

Last updated 2026-10-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-22 22:16 UTCPublished CVE record published
2026-10-28 19:10 UTCUpdated Record last modified

zillya total security DOWNGRADE

Affected: 3.0.2367.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.2367.0

1. Check installed version

apt-cache policy total-security || rpm -q total-security || total-security --version

2. No fixed release: DOWNGRADE to a release before 3.0.2367.0 (Debian / Ubuntu)

apt-cache madison total-security sudo apt install total-security=<VERSION_BEFORE_3.0.2367.0> sudo apt-mark hold total-security

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

dnf --showduplicates list total-security sudo dnf downgrade total-security-<VERSION_BEFORE_3.0.2367.0> sudo dnf versionlock add total-security

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-2023-53973?

total security: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-53973 being exploited?

CVE-2023-53973 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-2023-53973 affect?

CVE-2023-53973 affects total security. Severity is high (CVSS 8.4). Zillya Total Security 3.0.2367.0 contains a privilege escalation vulnerability that allows low-privileged users to copy files to unauthorized system locations using the quarantine module. Attackers can leverage symbolic link techniques to r

How urgent is CVE-2023-53973?

Priority 39/100. High severity; Public exploit reference

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References

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