How severe is CVE-2020-13420?

CVE-2020-13420 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-13420 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13420?

CVE-2020-13420 affects Openiam. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13420?

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

When was CVE-2020-13420 published?

CVE-2020-13420 was published on 2021-04-06 and last updated on 2026-06-17.

CVE-2020-13420

CVE-2020-13420 is a critical-severity vulnerability in Openiam with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openiam
Published: 2021-04-06
Last modified: 2026-06-17

Description

OpenIAM before 4.2.0.3 allows remote attackers to execute arbitrary code via Groovy Script.

Frequently asked questions

What is CVE-2020-13420?: OpenIAM before 4.2.0.3 allows remote attackers to execute arbitrary code via Groovy Script.
How severe is CVE-2020-13420?: CVE-2020-13420 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-13420 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13420?: CVE-2020-13420 affects Openiam. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13420?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-13420 published?: CVE-2020-13420 was published on 2021-04-06 and last updated on 2026-06-17.

References

https://github.com/Accenture/AARO-Bugs/blob/master/AARO-CVE-List.md

Affected products (1)

cpe:2.3:a:openiam:openiam:*:*:*:*:*:*:*:*

More vulnerabilities in Openiam

CVE-2020-13421 — Critical (CVSS 9.8): OpenIAM before 4.2.0.3 has Incorrect Access Control for the Create User, Modify User Permissions, and Password Reset…
CVE-2020-13422 — High (CVSS 8.1): OpenIAM before 4.2.0.3 does not verify if a user has permissions to perform /webconsole/rest/api/* administrative…
CVE-2020-13418 — Medium (CVSS 6.1): OpenIAM before 4.2.0.3 allows XSS in the Add New User feature.
CVE-2020-13419 — Medium (CVSS 5.3): OpenIAM before 4.2.0.3 allows Directory Traversal in the Batch task.

All CVEs affecting Openiam →