How severe is CVE-2016-5360?

CVE-2016-5360 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-5360 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 43% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-5360?

CVE-2016-5360 primarily affects Haproxy. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-5360?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-5360 published?

CVE-2016-5360 was published on 2016-06-30 and last updated on 2026-06-17.

CVE-2016-5360

CVE-2016-5360 is a high-severity vulnerability in Haproxy with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 43% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 43% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Haproxy
Published: 2016-06-30
Last modified: 2026-06-17

Description

HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to cause a denial of service (uninitialized memory access and crash) or possibly have unspecified other impact via unknown vectors.

Frequently asked questions

What is CVE-2016-5360?: HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to cause a denial of service (uninitialized memory access and crash) or possibly have unspecified other impact via unknown vectors.
How severe is CVE-2016-5360?: CVE-2016-5360 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-5360 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 43% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-5360?: CVE-2016-5360 primarily affects Haproxy. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-5360?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-5360 published?: CVE-2016-5360 was published on 2016-06-30 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:a:haproxy:haproxy:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.6.2:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.6.3:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.6.4:*:*:*:*:*:*:*
cpe:2.3:a:haproxy:haproxy:1.6.5:*:*:*:*:*:*:*

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