How severe is CVE-2015-4266?

CVE-2015-4266 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-4266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4266?

CVE-2015-4266 primarily affects Cisco Identity Services Engine Software. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4266?

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

When was CVE-2015-4266 published?

CVE-2015-4266 was published on 2015-07-16 and last updated on 2026-06-17.

CVE-2015-4266

CVE-2015-4266 is a medium-severity vulnerability in Cisco Identity Services Engine Software with a CVSS 2.0 base score of 4.3. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Identity Services Engine Software
Published: 2015-07-16
Last modified: 2026-06-17

Description

The web interface in Cisco Identity Services Engine (ISE) 1.1(4.1), 1.3(106.146), and 1.3(120.135) does not properly restrict use of IFRAME elements, which makes it easier for remote attackers to conduct clickjacking attacks and unspecified other attacks via a crafted web site, related to a "cross-frame scripting (XFS)" issue, aka Bug ID CSCut04556.

Frequently asked questions

What is CVE-2015-4266?: The web interface in Cisco Identity Services Engine (ISE) 1.1(4.1), 1.3(106.146), and 1.3(120.135) does not properly restrict use of IFRAME elements, which makes it easier for remote attackers to conduct clickjacking attacks and unspecified other attacks via a crafted web site, related to a "cross-frame scripting (XFS)" issue, aka Bug ID CSCut04556.
How severe is CVE-2015-4266?: CVE-2015-4266 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-4266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4266?: CVE-2015-4266 primarily affects Cisco Identity Services Engine Software. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-4266?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4266 published?: CVE-2015-4266 was published on 2015-07-16 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:cisco:identity_services_engine_software:1.1\(4.1\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.3\(106.146\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.3\(120.135\):*:*:*:*:*:*:*

More vulnerabilities in Cisco Identity Services Engine Software

CVE-2011-3290 — Critical (CVSS 10.0): Cisco Identity Services Engine (ISE) before 1.0.4.MR2 has default Oracle database credentials, which allows remote…
CVE-2015-6323 — Critical (CVSS 9.8): The Admin portal in Cisco Identity Services Engine (ISE) 1.1.x, 1.2.0 before patch 17, 1.2.1 before patch 8, 1.3 before…
CVE-2013-5530 — Critical (CVSS 9.0): The web framework in Cisco Identity Services Engine (ISE) 1.0 and 1.1.0 before 1.1.0.665-5, 1.1.1 before 1.1.1.268-7,…
CVE-2018-0413 — High (CVSS 8.8): A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an…
CVE-2017-3835 — High (CVSS 8.8): A vulnerability in the sponsor portal of Cisco Identity Services Engine (ISE) could allow an authenticated, remote…
CVE-2017-12316 — High (CVSS 7.5): A vulnerability in the Guest Portal login page of Cisco Identity Services Engine (ISE) could allow an unauthenticated,…

All CVEs affecting Cisco Identity Services Engine Software →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →