How severe is CVE-2017-7421?

CVE-2017-7421 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-7421 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7421?

CVE-2017-7421 primarily affects Microfocus Directory Server. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-7421?

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

When was CVE-2017-7421 published?

CVE-2017-7421 was published on 2017-08-21 and last updated on 2026-06-17.

CVE-2017-7421

CVE-2017-7421 is a medium-severity vulnerability in Microfocus Directory Server with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microfocus Directory Server
Published: 2017-08-21
Last modified: 2026-06-17

Description

Reflected and stored Cross-Site Scripting (XSS, CWE-79) vulnerabilities in Directory Server (aka Enterprise Server Administration web UI) and ESMAC (aka Enterprise Server Monitor and Control) in Micro Focus Enterprise Developer and Enterprise Server 2.3 and earlier, 2.3 Update 1 before Hotfix 8, and 2.3 Update 2 before Hotfix 9 allow remote authenticated attackers to bypass protection mechanisms (CWE-693) and other security features.

Frequently asked questions

What is CVE-2017-7421?: Reflected and stored Cross-Site Scripting (XSS, CWE-79) vulnerabilities in Directory Server (aka Enterprise Server Administration web UI) and ESMAC (aka Enterprise Server Monitor and Control) in Micro Focus Enterprise Developer and Enterprise Server 2.3 and earlier, 2.3 Update 1 before Hotfix 8, and 2.3 Update 2 before Hotfix 9 allow remote authenticated attackers to bypass protection mechanisms (CWE-693) and other security features.
How severe is CVE-2017-7421?: CVE-2017-7421 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-7421 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7421?: CVE-2017-7421 primarily affects Microfocus Directory Server. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-7421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-7421 published?: CVE-2017-7421 was published on 2017-08-21 and last updated on 2026-06-17.

References

https://community.microfocus.com/microfocus/mainframe_solutions/enterprise_server/w/knowledge_base/29131/enterprise-server-security-fixes-july-2017

Affected products (8)

cpe:2.3:a:microfocus:directory_server:-:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:enterprise_developer:2.3:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:enterprise_developer:2.3:update1:*:*:*:*:*:*
cpe:2.3:a:microfocus:enterprise_developer:2.3:update2:*:*:*:*:*:*
cpe:2.3:a:microfocus:enterprise_server:*:*:*:*:*:*:*:*
cpe:2.3:a:microfocus:enterprise_server:2.3:update1:*:*:*:*:*:*
cpe:2.3:a:microfocus:enterprise_server:2.3:update2:*:*:*:*:*:*
cpe:2.3:a:microfocus:enterprise_server_monitor_and_control:-:*:*:*:*:*:*:*

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