How severe is CVE-2016-1402?

CVE-2016-1402 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-2016-1402 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1402?

CVE-2016-1402 primarily affects Cisco Identity Services Engine Software. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1402?

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-2016-1402 published?

CVE-2016-1402 was published on 2016-05-21 and last updated on 2026-06-17.

CVE-2016-1402

CVE-2016-1402 is a high-severity vulnerability in Cisco Identity Services Engine Software with a CVSS 3.x base score of 7.5. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Cisco Identity Services Engine Software
Published: 2016-05-21
Last modified: 2026-06-17

Description

The Active Directory (AD) integration component in Cisco Identity Service Engine (ISE) before 1.2.0.899 patch 7, when AD group-membership authorization is enabled, allows remote attackers to cause a denial of service (authentication outage) via a crafted Password Authentication Protocol (PAP) authentication request, aka Bug ID CSCun25815.

Frequently asked questions

What is CVE-2016-1402?: The Active Directory (AD) integration component in Cisco Identity Service Engine (ISE) before 1.2.0.899 patch 7, when AD group-membership authorization is enabled, allows remote attackers to cause a denial of service (authentication outage) via a crafted Password Authentication Protocol (PAP) authentication request, aka Bug ID CSCun25815.
How severe is CVE-2016-1402?: CVE-2016-1402 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-2016-1402 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1402?: CVE-2016-1402 primarily affects Cisco Identity Services Engine Software. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1402?: 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-2016-1402 published?: CVE-2016-1402 was published on 2016-05-21 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:cisco:identity_services_engine_software:1.2.0.899:p1:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.2.0.899:p2:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.2.0.899:p3:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.2.0.899:p4:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.2.0.899:p5:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.2.0.899:p6:*:*:*:*:*:*

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