How severe is CVE-2021-45102?

CVE-2021-45102 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-2021-45102 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45102?

CVE-2021-45102 primarily affects Wisc Htcondor. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-45102?

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-2021-45102 published?

CVE-2021-45102 was published on 2021-12-16 and last updated on 2026-06-17.

CVE-2021-45102

CVE-2021-45102 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-863.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Wisc Htcondor
Published: 2021-12-16
Last modified: 2026-06-17

Description

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 daemon using a SciToken, a user may be granted authorizations beyond what the token should allow.

Frequently asked questions

What is CVE-2021-45102?: 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 daemon using a SciToken, a user may be granted authorizations beyond what the token should allow.
How severe is CVE-2021-45102?: CVE-2021-45102 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-2021-45102 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45102?: CVE-2021-45102 primarily affects Wisc Htcondor. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-45102?: 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-2021-45102 published?: CVE-2021-45102 was published on 2021-12-16 and last updated on 2026-06-17.

References

https://research.cs.wisc.edu/htcondor/security/vulnerabilities/HTCONDOR-2021-0004/

Affected products (4)

cpe:2.3:a:wisc:htcondor:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:wisc:htcondor:9.0.1:*:*:*:*:*:*:*
cpe:2.3:a:wisc:htcondor:9.0.2:*:*:*:*:*:*:*
cpe:2.3:a:wisc:htcondor:9.1.0:*:*:*:*:*:*:*

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-2021-25312 — High (CVSS 8.8): 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…
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-863 (Incorrect Authorization) vulnerabilities

CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-863 (Incorrect Authorization) vulnerabilities →