CVE-2026-25963Network attack vector

Cross-team certificate-template deletion via unchecked template ownership

Published Feb 26, 2026 · Updated Feb 26, 2026

Incorrect authorization in Fleet before 4.80.1 allows remote authenticated users to delete other teams' certificate templates. The batch deletion endpoint authorizes the supplied team identifier but passes template IDs to deletion without confirming that every ID belongs to that team. Team-administrator access within the same Fleet instance is required, and deletion can interrupt device enrollment, Wi-Fi, VPN, or other certificate-dependent workflows without exposing data or control-plane access.

CVSS severity6.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Fleet before 4.80.1 allows remote authenticated users to delete other teams' certificate templates. The batch deletion endpoint authorizes the supplied team identifier but passes template IDs to deletion without confirming that every ID belongs to that team. Team-administrator access within the same Fleet instance is required, and deletion can interrupt device enrollment, Wi-Fi, VPN, or other certificate-dependent workflows without exposing data or control-plane access.

The record

CVE
CVE-2026-25963
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
Fleet Device Management
Product
Fleet
Classifications
CWE-863, T1485
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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=< 4.80.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Fleet Device Management · Fleetversion=< 4.80.1

Published CVSS scores

1.2GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1485Data Destruction

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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