CVE-2021-25312Network attack vector

Authenticated user impersonation via IDTOKENS

Published Jan 27, 2021 · Updated Aug 3, 2024

Authentication bypass in HTCondor before 8.9.11 allows remote authenticated users to submit jobs as other users via IDTOKENS. The schedd issues a valid IDTOKEN for an authenticated identity without preventing selection of another user or the condor service. Any user able to authenticate to condor_schedd can exploit this with low effort, enabling processes and file access as the impersonated user and daemon reconfiguration.

CVSS severity8.8
High
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in HTCondor before 8.9.11 allows remote authenticated users to submit jobs as other users via IDTOKENS. The schedd issues a valid IDTOKEN for an authenticated identity without preventing selection of another user or the condor service. Any user able to authenticate to condor_schedd can exploit this with low effort, enabling processes and file access as the impersonated user and daemon reconfiguration.

The record

CVE
CVE-2021-25312
Published
Jan 27, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NISTAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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.

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1078Valid Accounts

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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