CVE-2021-34738
CVE-2021-34738 is a medium-severity vulnerability in Cisco Identity Services Engine 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% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Cisco Identity Services Engine
- Published:
- Last modified:
Description
Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) Software could allow an attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory.
Frequently asked questions
- What is CVE-2021-34738?
- Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) Software could allow an attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory.
- How severe is CVE-2021-34738?
- CVE-2021-34738 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-2021-34738 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-34738?
- CVE-2021-34738 primarily affects Cisco Identity Services Engine. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-34738?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-34738 published?
- CVE-2021-34738 was published on 2021-10-21 and last updated on 2026-06-17.
References
Affected products (25)
- cpe:2.3:a:cisco:identity_services_engine:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch9:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7\(0.207\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7\(0.356\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7\(0.356\):-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7\(0.903\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0\(0.458\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:*
- cpe:2.3:a:cisco:identity_services_engine:3.0.0:patch3:*:*:*:*:*:*
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