CVE-2020-23967: Dr.Web Security Space versions 11 and 12 allow elevation of privilege for local users without administrative p

Routine

HIGH 7.8DOWNGRADE

CVE-2020-23967 is a high-severity flaw (CVSS 7.8) affecting security space. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dr.Web Security Space versions 11 and 12 allow elevation of privilege for local users without administrative privileges to NT AUTHORITY\SYSTEM due to insufficient control during autoupdate.

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	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-347
Published	2021-03-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: drweb

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

Am I affected?

Timeline

2021-03-08 15:15 UTCPublished CVE record published
2026-06-17 03:05 UTCUpdated Record last modified

drweb security space DOWNGRADE

Affected: 11.0 · 12.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 11.0 (Debian / Ubuntu)

apt-cache madison security-space sudo apt install security-space=<VERSION_BEFORE_11.0> sudo apt-mark hold security-space

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

dnf --showduplicates list security-space sudo dnf downgrade security-space-<VERSION_BEFORE_11.0> sudo dnf versionlock add security-space

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-2020-23967?

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

Is CVE-2020-23967 being exploited?

CVE-2020-23967 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-2020-23967 affect?

CVE-2020-23967 affects security space. Severity is high (CVSS 7.8). Dr.Web Security Space versions 11 and 12 allow elevation of privilege for local users without administrative privileges to NT AUTHORITY\SYSTEM due to insufficient control during autoupdate.

How urgent is CVE-2020-23967?

Priority 39/100. High severity; Public exploit reference

Related CVEs

CVE-2021-28130 HIGH 7.8 DOWNGRADE Dr.Web Firewall 12.5.2.4160 on Windows incorrectly restricts applications signed by Dr.Web

References

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