How severe is CVE-2016-5765?

CVE-2016-5765 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-5765 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-5765?

CVE-2016-5765 primarily affects Microfocus Host Access Management And Security Server. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-5765?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-5765 published?

CVE-2016-5765 was published on 2016-11-29 and last updated on 2026-06-17.

CVE-2016-5765

CVE-2016-5765 is a medium-severity vulnerability in Microfocus Host Access Management And Security Server with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Microfocus Host Access Management And Security Server
Published: 2016-11-29
Last modified: 2026-06-17

Description

Administrative Server in Micro Focus Host Access Management and Security Server (MSS) and Reflection for the Web (RWeb) and Reflection Security Gateway (RSG) and Reflection ZFE (ZFE) allows remote unauthenticated attackers to read arbitrary files via a specially crafted URL that allows limited directory traversal. Applies to MSS 12.3 before 12.3.326 and MSS 12.2 before 12.2.342 and RSG 12.1 before 12.1.362 and RWeb 12.3 before 12.3.312 and RWeb 12.2 before 12.2.342 and RWeb 12.1 before 12.1.362 and ZFE 2.0.1 before 2.0.1.18 and ZFE 2.0.0 before 2.0.0.52 and ZFE 1.4.0 before 1.4.0.14.

Frequently asked questions

What is CVE-2016-5765?: Administrative Server in Micro Focus Host Access Management and Security Server (MSS) and Reflection for the Web (RWeb) and Reflection Security Gateway (RSG) and Reflection ZFE (ZFE) allows remote unauthenticated attackers to read arbitrary files via a specially crafted URL that allows limited directory traversal. Applies to MSS 12.3 before 12.3.326 and MSS 12.2 before 12.2.342 and RSG 12.1 before 12.1.362 and RWeb 12.3 before 12.3.312 and RWeb 12.2 before 12.2.342 and RWeb 12.1 before 12.1.362 and ZFE 2.0.1 before 2.0.1.18 and ZFE 2.0.0 before 2.0.0.52 and ZFE 1.4.0 before 1.4.0.14.
How severe is CVE-2016-5765?: CVE-2016-5765 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-5765 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-5765?: CVE-2016-5765 primarily affects Microfocus Host Access Management And Security Server. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-5765?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-5765 published?: CVE-2016-5765 was published on 2016-11-29 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:a:microfocus:host_access_management_and_security_server:12.2:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:host_access_management_and_security_server:12.3:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:reflection_for_the_web:12.1:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:reflection_for_the_web:12.2:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:reflection_for_the_web:12.3:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:reflection_security_gateway:12.1:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:reflection_zfe:1.4.0.14:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:reflection_zfe:2.0.0.52:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:reflection_zfe:2.0.1.18:*:*:*:*:*:*:*

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