Is CVE-2015-3281 in the CISA KEV catalog?

No. CVE-2015-3281 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-3281?

CVE-2015-3281 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2015-3281?

CVE-2015-3281 has an EPSS score of 4.27% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-3281?

Upgrade haproxy on debian 11 to 1.5.14-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-3281

MEDIUMEPSS 90th pctl

5.0

CVSS v2

NVD

Description

The buffer_slow_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly realign a buffer that is used for pending outgoing data, which allows remote attackers to obtain sensitive information (uninitialized memory contents of previous requests) via a crafted request.

CWE-119Buffer Overflow

How to fix

Remediation Available

haproxyDebian

Fixed in:1.5.14-1CVE-2015-3281

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

4.27%probability of exploitation in 30 days

90thpercentile

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

References

Patch1

haproxy.org

Third-Party Advisory7

Other references1

git.haproxy.org

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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.