CVE-2021-38453: Some API functions allow interaction with the registry, which includes reading values as well as data modifica

Q: How do I fix CVE-2021-38453?

versiondog: upgrade to 8.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-38453 being exploited?

CVE-2021-38453 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-38453 affect?

CVE-2021-38453 affects versiondog. Severity is critical (CVSS 9.1). Some API functions allow interaction with the registry, which includes reading values as well as data modification.

Q: How urgent is CVE-2021-38453?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2021-38453 is a critical-severity flaw (CVSS 9.1) affecting versiondog. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Some API functions allow interaction with the registry, which includes reading values as well as data modification.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-15
Published	2021-10-22
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: auvesy

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

Am I affected?

Timeline

2021-10-22 12:15 UTCPublished CVE record published
2026-06-17 04:02 UTCUpdated Record last modified

auvesy versiondog UPGRADE

Affected: < 8.0.0

Fixed in: 8.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy versiondog || rpm -q versiondog || versiondog --version

2. UPGRADE to 8.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade versiondog

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade versiondog

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2021-38453?

versiondog: upgrade to 8.0.0. Exact commands for each OS are on this page.

Is CVE-2021-38453 being exploited?

CVE-2021-38453 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-2021-38453 affect?

CVE-2021-38453 affects versiondog. Severity is critical (CVSS 9.1). Some API functions allow interaction with the registry, which includes reading values as well as data modification.

How urgent is CVE-2021-38453?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

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CVE-2021-38479 MEDIUM 6.5 UPGRADE Many API function codes receive raw pointers remotely from the user and trust these pointers as valid in-bound
CVE-2021-38477 CRITICAL 9.8 UPGRADE There are multiple API function codes that permit reading and writing data to or from files and directories, w
CVE-2021-38475 HIGH 7.3 UPGRADE The database connection to the server is performed by calling a specific API, which could allow an unprivilege
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References

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