Is CVE-2012-4751 in the CISA KEV catalog?

No. CVE-2012-4751 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-4751?

CVE-2012-4751 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2012-4751?

CVE-2012-4751 has an EPSS score of 5.79% (92th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-4751?

Upgrade otrs2 on debian 11 to 3.1.7+dfsg1-6 or later.

CVE & CISA-KEV Catalog

CVE-2012-4751

MEDIUMEPSS 92th pctl

4.3

CVSS v2

NVD

Description

Cross-site scripting (XSS) vulnerability in Open Ticket Request System (OTRS) Help Desk 2.4.x before 2.4.15, 3.0.x before 3.0.17, and 3.1.x before 3.1.11 allows remote attackers to inject arbitrary web script or HTML via an e-mail message body with whitespace before a javascript: URL in the SRC attribute of an element, as demonstrated by an IFRAME element.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

otrs2Debian

Fixed in:3.1.7+dfsg1-6CVE-2012-4751

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

5.79%probability of exploitation in 30 days

92ndpercentile

High risk: more likely to be exploited than 92% of all known CVEs.

References

Exploit1

znuny.com

Vendor Advisory1

otrs.com

Government Resource1

kb.cert.org

Other references4

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.