Is CVE-2015-0881 in the CISA KEV catalog?

No. CVE-2015-0881 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-0881?

CVE-2015-0881 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2015-0881?

CVE-2015-0881 has an EPSS score of 4.51% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-0881?

Upgrade squid on debian 11 to 4.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-0881

MEDIUMEPSS 90th pctl

4.3

CVSS v2

NVD

Description

CRLF injection vulnerability in Squid before 3.1.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted header in a response.

How to fix

Remediation Available

squidDebian

Fixed in:4.1-1CVE-2015-0881

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

4.51%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Vendor Advisory2

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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 2026-05-06.