CVE-2025-52894Network attack vector

Rekey denial of service via unauthenticated cancellation

Published Jun 25, 2025 · Updated Jun 25, 2025

Improper input validation in OpenBao before 2.3.0 allows remote attackers to interrupt active root or recovery rekey operations. The unauthenticated DELETE /v1/sys/rekey/init and /v1/sys/rekey-recovery-key/init handlers accept cancellation requests and terminate the active workflow. Exploitation requires a rekey operation to be in progress; repeated unaudited requests abort key rotation while existing keys remain valid.

CVSS severity6.9
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in OpenBao before 2.3.0 allows remote attackers to interrupt active root or recovery rekey operations. The unauthenticated DELETE /v1/sys/rekey/init and /v1/sys/rekey-recovery-key/init handlers accept cancellation requests and terminate the active workflow. Exploitation requires a rekey operation to be in progress; repeated unaudited requests abort key rotation while existing keys remain valid.

The record

CVE
CVE-2025-52894
Published
Jun 25, 2025
Updated
Jun 25, 2025
Vendor
OpenBao
Product
OpenBao
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 25, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBao · OpenBaoversion=< 2.3.0

Published CVSS scores

6.9GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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