CVE-2026-76447
Last modified
CVE-2026-76447 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A vulnerability in the Online Certificate Status Protocol (OCSP) responder of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to cause an administrative reload of the OCSP responder certificate and key material. This vulnerability is due to missing authentication on a function of the OCSP responder. An attacker could exploit this vulnerability by sending a crafted request to an affected device.
Description
A vulnerability in the Online Certificate Status Protocol (OCSP) responder of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to cause an administrative reload of the OCSP responder certificate and key material. This vulnerability is due to missing authentication on a function of the OCSP responder. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to cause the OCSP responder to reload certificate and key material on demand.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Identity Services Engine Software | 3.1.0; 3.1.0 p1; 3.1.0 p3; 3.1.0 p2; 3.2.0; 3.1.0 p4; 3.1.0 p5; 3.2.0 p1; 3.1.0 p6; 3.2.0 p2; 3.1.0 p7; 3.3.0; 3.2.0 p3; 3.2.0 p4; 3.1.0 p8; 3.2.0 p5; 3.2.0 p6; 3.1.0 p9; 3.3 Patch 2; 3.3 Patch 1; 3.3 Patch 3; 3.4.0; 3.2.0 p7; 3.3 Patch 4; 3.4 Patch 1; 3.1.0 p10; 3.3 Patch 5; 3.3 Patch 6; 3.4 Patch 2; 3.3 Patch 7; 3.4 Patch 3; 3.5.0; 3.4 Patch 4; 3.3 Patch 8; 3.2 Patch 8; 3.5 Patch 1; 3.3 Patch 9; 3.2 Patch 9; 3.4 Patch 5; 3.5 Patch 3; 3.5 Patch 2; 3.3 Patch 10; 3.3 Patch 11; 3.4 Patch 6; 3.2 Patch 10; 3.1.0 p72; 3.1.0 p11 |
| Cisco | Cisco ISE Passive Identity Connector | 3.2.0; 3.1.0; 3.3.0; 3.4.0; 3.5.0 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-76447?
How severe is CVE-2026-76447?
How do I fix CVE-2026-76447?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-76440As part of Cisco's ongoing commitment to proactive security …9.8
- CVE-2026-76441As part of Cisco's ongoing commitment to proactive security …9.8
- CVE-2026-76442As part of Cisco's ongoing commitment to proactive security …7.5
- CVE-2026-76443As part of Cisco's ongoing commitment to proactive security …9.8
- CVE-2026-76444A vulnerability in an internal service of Cisco ISE and Cisc…5.3
- CVE-2026-76446A vulnerability in an API of Cisco ISE and Cisco ISE-PIC cou…4.9
- CVE-2026-76448A vulnerability in Cisco Identity Services Engine (ISE) and …4.9
- CVE-2026-76449A vulnerability in Cisco Identity Services Engine (ISE) and …4.9
- CVE-2026-7645A vulnerability was found in ruvnet sublinear-time-solver 1.…6.5
- CVE-2026-76450A vulnerability in Cisco Identity Services Engine (ISE) and …4.9
- CVE-2026-76451A vulnerability in Cisco Identity Services Engine (ISE) and …4.9
- CVE-2026-7646IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read a…6.5
Are you affected by CVE-2026-76447?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST