Is CVE-2011-4923 in the CISA KEV catalog?

No. CVE-2011-4923 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4923?

CVE-2011-4923 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2011-4923?

CVE-2011-4923 has an EPSS score of 2.11% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-4923?

Upgrade backuppc on debian 11 to 3.2.1-2 or later.

CVE & CISA-KEV Catalog

CVE-2011-4923

MEDIUMEPSS 80th pctl

4.3

CVSS v2

NVD

Description

Cross-site scripting (XSS) vulnerability in View.pm in BackupPC 3.0.0, 3.1.0, 3.2.0, 3.2.1, and possibly earlier allows remote attackers to inject arbitrary web script or HTML via the num parameter in a view action to index.cgi, related to the log file viewer, a different vulnerability than CVE-2011-3361.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

backuppcDebian

Fixed in:3.2.1-2CVE-2011-4923

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

2.11%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Vendor Advisory1

secunia.com

Other references5

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

Embed a live status badge for CVE-2011-4923

Markdown

[![CVE-2011-4923](https://tridentstack.com/cve/badge/CVE-2011-4923.svg)](https://tridentstack.com/cve/CVE-2011-4923)

HTML

<a href="https://tridentstack.com/cve/CVE-2011-4923"><img src="https://tridentstack.com/cve/badge/CVE-2011-4923.svg" alt="CVE-2011-4923"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.