CVE-2023-30635: TiKV 6.1.2 allows remote attackers to cause a denial of service (fatal error) upon an attempt to get a timesta

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2023-30635 is a high-severity flaw (CVSS 7.5) affecting tikv. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TiKV 6.1.2 allows remote attackers to cause a denial of service (fatal error) upon an attempt to get a timestamp from the Placement Driver.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-400
Published	2023-04-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tikv

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

Am I affected?

Timeline

2023-04-13 23:15 UTCPublished CVE record published
2026-06-17 05:55 UTCUpdated Record last modified

tikv tikv DOWNGRADE

Affected: 6.1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.1.2 (Debian / Ubuntu)

apt-cache madison tikv sudo apt install tikv=<VERSION_BEFORE_6.1.2> sudo apt-mark hold tikv

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

dnf --showduplicates list tikv sudo dnf downgrade tikv-<VERSION_BEFORE_6.1.2> sudo dnf versionlock add tikv

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-2023-30635?

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

Is CVE-2023-30635 being exploited?

CVE-2023-30635 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-2023-30635 affect?

CVE-2023-30635 affects tikv. Severity is high (CVSS 7.5). TiKV 6.1.2 allows remote attackers to cause a denial of service (fatal error) upon an attempt to get a timestamp from the Placement Driver.

How urgent is CVE-2023-30635?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-30636 HIGH 7.5 DOWNGRADE TiKV 6.1.2 allows remote attackers to cause a denial of service (fatal error, with RpcStatus UNAVAILABLE for "

References

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