How severe is CVE-2021-34427?

CVE-2021-34427 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-2021-34427 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 58% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34427?

CVE-2021-34427 affects Eclipse Business Intelligence And Reporting Tools. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34427?

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-2021-34427 published?

CVE-2021-34427 was published on 2021-06-25 and last updated on 2026-06-17.

CVE-2021-34427

CVE-2021-34427 is a critical-severity vulnerability in Eclipse Business Intelligence And Reporting Tools with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 58% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 58% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Eclipse Business Intelligence And Reporting Tools
Published: 2021-06-25
Last modified: 2026-06-17

Description

In Eclipse BIRT versions 4.8.0 and earlier, an attacker can use query parameters to create a JSP file which is accessible from remote (current BIRT viewer dir) to inject JSP code into the running instance.

Frequently asked questions

What is CVE-2021-34427?: In Eclipse BIRT versions 4.8.0 and earlier, an attacker can use query parameters to create a JSP file which is accessible from remote (current BIRT viewer dir) to inject JSP code into the running instance.
How severe is CVE-2021-34427?: CVE-2021-34427 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-2021-34427 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 58% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34427?: CVE-2021-34427 affects Eclipse Business Intelligence And Reporting Tools. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34427?: 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-2021-34427 published?: CVE-2021-34427 was published on 2021-06-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eclipse:business_intelligence_and_reporting_tools:*:*:*:*:*:*:*:*

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