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CVE-2021-34427

73
FAUCET Score

CVE-2021-34427 is a critical vulnerability affecting Eclipse BIRT versions 4.8.0 and earlier, allowing an unauthenticated attacker to inject JSP code into the running instance via crafted query parameters, leading to remote code execution. This flaw carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation in the wild or Metasploit modules, Nuclei templates exist for detecting this vulnerability, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.8.0CPE matchmatch criteria
cpe:2.3:a:eclipse:business_intelligence_and_reporting_tools:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
57.71%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Nuclei: CVE-2021-34427 · May 3, 2023
This CVE's current EPSS score of 0.5771 is in the 97th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2021-34427Important

eclipse-birt: an attacker can use query parameters to create a JSP file and inject JSP code into the running instance

Aug 22, 2018

References

packetstormsecurity.com / files/170326/Eclipse-Business-Intelligence-Reporting-Tool-4.11.0-Remote-Code-Execution.html
ExploitThird Party Advisory
bugs.eclipse.org / bugs/show_bug.cgi
ExploitIssue TrackingPatchVendor Advisory
seclists.org / fulldisclosure/2022/Dec/30
ExploitMailing ListThird Party Advisory