How severe is CVE-2021-28154?

CVE-2021-28154 has a CVSS 3.x base score of 9.1, 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 none.

Is CVE-2021-28154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28154?

CVE-2021-28154 affects Camunda Modeler. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28154?

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-2021-28154 published?

CVE-2021-28154 was published on 2021-03-11 and last updated on 2026-06-17.

CVE-2021-28154

CVE-2021-28154 is a critical-severity vulnerability in Camunda Modeler with a CVSS 3.x base score of 9.1. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Camunda Modeler
Published: 2021-03-11
Last modified: 2026-06-17

Description

Camunda Modeler (aka camunda-modeler) through 4.6.0 allows arbitrary file access. A remote attacker may send a crafted IPC message to the exposed vulnerable ipcRenderer IPC interface, which manipulates the readFile and writeFile APIs. NOTE: the vendor states "The way we secured the app is that it does not allow any remote scripts to be opened, no unsafe scripts to be evaluated, no remote sites to be browsed.

Frequently asked questions

What is CVE-2021-28154?: Camunda Modeler (aka camunda-modeler) through 4.6.0 allows arbitrary file access. A remote attacker may send a crafted IPC message to the exposed vulnerable ipcRenderer IPC interface, which manipulates the readFile and writeFile APIs. NOTE: the vendor states "The way we secured the app is that it does not allow any remote scripts to be opened, no unsafe scripts to be evaluated, no remote sites to be browsed.
How severe is CVE-2021-28154?: CVE-2021-28154 has a CVSS 3.x base score of 9.1, 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 none.
Is CVE-2021-28154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28154?: CVE-2021-28154 affects Camunda Modeler. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28154?: 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-2021-28154 published?: CVE-2021-28154 was published on 2021-03-11 and last updated on 2026-06-17.

References

https://github.com/camunda/camunda-modeler/issues/2143

Affected products (1)

cpe:2.3:a:camunda:modeler:*:*:*:*:*:*:*:*

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