CVE-2022-23551

Unauthorized identity token access via backslash path bypass

Published Dec 21, 2022 · Updated Apr 15, 2025

Authorization bypass in Microsoft AAD Pod Identity before 1.8.13 allows local users in a cluster pod to obtain unauthorized identity tokens. The NMI router matches only slash-delimited token paths, so a backslash-delimited path misses validation and falls through to the generic IMDS proxy. Exploitation requires code execution in a cluster pod and a reachable NMI interception path, and exposes tokens for identities not assigned to that pod.

CVSS severity5.3
Medium
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Microsoft AAD Pod Identity before 1.8.13 allows local users in a cluster pod to obtain unauthorized identity tokens. The NMI router matches only slash-delimited token paths, so a backslash-delimited path misses validation and falls through to the generic IMDS proxy. Exploitation requires code execution in a cluster pod and a reachable NMI interception path, and exposes tokens for identities not assigned to that pod.

The record

CVE
CVE-2022-23551
Published
Dec 21, 2022
Updated
Apr 15, 2025
Vendor
Microsoft
Product
AAD Pod Identity
Classifications
CWE-1259, CWE-863, T1552.005, T1528
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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=< 1.8.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · AAD Pod Identityversion=< 1.8.13

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L
5.3NISTCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:H/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1259Improper Restriction of Security Token Assignment
CWE-863Incorrect Authorization
T1552.005Unsecured Credentials Cloud Instance Metadata API
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

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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