CVE-2023-30636Public exploitNetwork attack vector

Node crash via fatal not-leader RPC handling

Published Apr 13, 2023 · Updated Feb 7, 2025

Denial of service in TiKV 6.1.2 allows remote attackers to crash a starting node when an RPC context deadline is exceeded. The startup path at server.rs:955 treats a gRPC UNAVAILABLE not-leader response as a fatal error rather than a transient condition. Reproduction requires node startup during kill, pause, or partition fault injection; the demonstrated consequence is termination of that node.

CVSS severity7.5
High
EPSS probability0.95%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in TiKV 6.1.2 allows remote attackers to crash a starting node when an RPC context deadline is exceeded. The startup path at server.rs:955 treats a gRPC UNAVAILABLE not-leader response as a fatal error rather than a transient condition. Reproduction requires node startup during kill, pause, or partition fault injection; the demonstrated consequence is termination of that node.

The record

CVE
CVE-2023-30636
Published
Apr 13, 2023
Updated
Feb 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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