How severe is CVE-2021-25312?

CVE-2021-25312 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-25312 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25312?

CVE-2021-25312 affects Wisc Htcondor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25312?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-25312 published?

CVE-2021-25312 was published on 2021-01-27 and last updated on 2026-06-17.

CVE-2021-25312

CVE-2021-25312 is a high-severity vulnerability in Wisc Htcondor with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Wisc Htcondor
Published: 2021-01-27
Last modified: 2026-06-17

Description

HTCondor before 8.9.11 allows a user to submit a job as another user on the system, because of a flaw in the IDTOKENS authentication method.

Frequently asked questions

What is CVE-2021-25312?: HTCondor before 8.9.11 allows a user to submit a job as another user on the system, because of a flaw in the IDTOKENS authentication method.
How severe is CVE-2021-25312?: CVE-2021-25312 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-25312 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25312?: CVE-2021-25312 affects Wisc Htcondor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25312?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-25312 published?: CVE-2021-25312 was published on 2021-01-27 and last updated on 2026-06-17.

References

https://research.cs.wisc.edu/htcondor/security/vulnerabilities/HTCONDOR-2021-0001.html

Affected products (1)

cpe:2.3:a:wisc:htcondor:*:*:*:*:*:*:*:*

More vulnerabilities in Wisc Htcondor

CVE-2021-25311 — Critical (CVSS 9.9): condor_credd in HTCondor before 8.9.11 allows Directory Traversal outside the SEC_CREDENTIAL_DIRECTORY_OAUTH directory,…
CVE-2019-18823 — Critical (CVSS 9.8): HTCondor up to and including stable series 8.8.6 and development series 8.9.4 has Incorrect Access Control. It is…
CVE-2022-26110 — High (CVSS 8.8): An issue was discovered in HTCondor 8.8.x before 8.8.16, 9.0.x before 9.0.10, and 9.1.x before 9.6.0. When a user…
CVE-2021-45102 — High (CVSS 8.8): An issue was discovered in HTCondor 9.0.x before 9.0.4 and 9.1.x before 9.1.2. When authenticating to an HTCondor…
CVE-2014-8126 — High (CVSS 8.8): The scheduler in HTCondor before 8.2.6 allows remote authenticated users to execute arbitrary code.
CVE-2012-3490 — High (CVSS 8.8): The (1) my_popenv_impl and (2) my_spawnv functions in src/condor_utils/my_popen.cpp and the (3) systemCommand function…

All CVEs affecting Wisc Htcondor →

Other CWE-306 (Missing Authentication for Critical Function) vulnerabilities

CVE-2026-54309 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP…
CVE-2026-50242 — Critical (CVSS 10.0): In JetBrains Hub before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429…
CVE-2026-49257 — Critical (CVSS 10.0): mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1…
CVE-2026-46846 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46803 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Security Framework).…
CVE-2026-46800 — Critical (CVSS 10.0): Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites).…

Browse all CWE-306 (Missing Authentication for Critical Function) vulnerabilities →