How severe is CVE-2013-5523?

CVE-2013-5523 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-5523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-5523?

CVE-2013-5523 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-2013-5523?

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

When was CVE-2013-5523 published?

CVE-2013-5523 was published on 2013-10-10 and last updated on 2026-06-16.

CVE-2013-5523

CVE-2013-5523 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% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Identity Services Engine Software
Published: 2013-10-10
Last modified: 2026-06-16

Description

The Sponsor Portal in Cisco Identity Services Engine (ISE) 1.2 and earlier 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 CSCui82666.

Frequently asked questions

What is CVE-2013-5523?: The Sponsor Portal in Cisco Identity Services Engine (ISE) 1.2 and earlier 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 CSCui82666.
How severe is CVE-2013-5523?: CVE-2013-5523 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-5523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-5523?: CVE-2013-5523 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-2013-5523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-5523 published?: CVE-2013-5523 was published on 2013-10-10 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:cisco:identity_services_engine_software:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:identity_services_engine_software:1.1:*:*:*:*:*:*:*

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