CVE-2026-76447

MEDIUM

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 OC...

Affects 0 products across 1 vendor.

CVSS 3.15.3
EPSS0.4%
Percentile29th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, no confidentiality impact, no integrity impact.
CWE Weakness Definitions
CWE-306: Missing Authentication for Critical Function

Software does not perform any authentication for functionality that requires a verified identity.

Related Attack Patterns (CAPEC)
CAPEC-12 Choosing Message Identifier
via CWE-306
CAPEC-36 Using Unpublished Interfaces or Functionality
via CWE-306
CAPEC-62 Cross Site Request Forgery
via CWE-306
CAPEC-166 Force the System to Reset Values
via CWE-306
CAPEC-216 Communication Channel Manipulation
via CWE-306

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

A medium severity vulnerability (CVE-2026-76447) affects the target system. 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 vu...

Is this CVE in your environment?

BreachSpider monitors your ICS/OT environment for vulnerabilities like this one. No agents or network access required. Free to start.

Check My Environment →
Frequently Asked Questions
What is CVE-2026-76447?
A medium severity vulnerability (CVE-2026-76447) affects the target system. 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 vu...
What is the CVSS score for CVE-2026-76447?
CVE-2026-76447 has CVSS 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. EPSS: 0.4%.
Is CVE-2026-76447 actively exploited?
No confirmed active exploitation of CVE-2026-76447 as of 2026-09-25.
How do I remediate CVE-2026-76447?
Apply vendor patches for CVE-2026-76447. Monitor Cisco advisories.
What systems are affected by CVE-2026-76447?
CVE-2026-76447 affects: Cisco.
Vulnerability Details
CVE IDCVE-2026-76447
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published2026-09-16
Last Modified2026-09-18
ICS Relevance70%
Weakness (CWE)
Missing Authentication for Critical Function
SourceNVD
Official 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.

Source: NIST NVD / MITRE CVE Database

Affected Products
VendorProductFixed Version
Cisco — —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: September 2026 | Threat Age: 11 Days
CISA KEVNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
Related CVEs affecting Cisco
CVE-2007-1257 10.0 The Network Analysis Module (NAM) in Cisco Catalyst Series 6000, 6500, and 76... CVE-2009-1167 10.0 Unspecified vulnerability on the Cisco Wireless LAN Controller (WLC) platform... CVE-2011-0364 10.0 The Management Console (webagent.exe) in Cisco Security Agent 5.1, 5.2, and 6... CVE-2011-0382 10.0 The CGI subsystem on Cisco TelePresence Recording Server devices with softwar... CVE-2011-2738 10.0 Multiple unspecified vulnerabilities in Cisco Unified Service Monitor before ...
View all Cisco CVEs →

ICS/OT Vulnerability Intelligence for Your Environment

BreachSpider tracks 366,000+ CVEs and matches them to your ICS/OT assets by exact version, with AI analysis, NERC CIP mapping, and vendor PSIRT contacts.

Create a free account →