CVE-2026-76448: Cisco Identity Services Engine SQL Injection Vulnerability
Tech GuruQuick Answer
CVE-2026-76448 affects vulnerable Cisco ISE and ISE-PIC releases, but exploitation requires valid administrative credentials. Cisco's grouped SQL/HQL injection advisory describes crafted API requests that can run unauthorized database queries. Check the installed train against that advisory's own fixes: older trains require migration, and ISE-PIC has a separate support limit. Cisco reports a public announcement but no known malicious use; that statement and the dated KEV check do not prove that exploitation has never occurred.
Fix Or Immediate Action
What to do now: Inventory ISE and ISE-PIC releases and administrative API access. Select the patch or migration path in the SQL/HQL advisory, including ISE-PIC's support restriction. Cisco provides no workaround.
Verification scope: Cisco advisory and CSAF checked October 2. CVE-2026-76448 is absent from KEV catalog 2026.10.02; absence does not prove non-exploitation. Confirm the current bug Details and upgrade prerequisites before deployment.
Scope And Impact In Plain Language
Who should check: Administrators of Cisco ISE and ISE Passive Identity Connector (ISE-PIC).
When this applies: Cisco lists vulnerable ISE and ISE-PIC releases as affected regardless of configuration. The attacker must already have valid administrative credentials; that prerequisite does not make an unpatched release fixed.
What could happen: Cisco's grouped advisory describes unauthorized database queries through crafted API requests. It does not establish the broader system-control outcome previously suggested here.
Not sure? Find the exact product, platform, and version in the management interface or CLI, then compare them with this CVE's affected-products section in Cisco's live advisory.
Status At A Glance
| Product scope | Cisco Identity Services Engine (ISE) |
|---|---|
| CVE | CVE-2026-76448 |
| TechGeeks response tier | P2 — review and schedule |
| Publication | Cisco final advisory |
| First published | 2026-09-16T16:00:00+00:00 |
| Last updated | 2026-09-16T16:00:00+00:00 |
| Cisco advisory SIR | Medium |
| CVE-specific Cisco SIR | Not separately stated |
| CVSS base score / severity | 4.9 — Medium |
| CVSS vector | CVSS v3.1 — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N |
| CISA KEV at last check | No — this is separate from Cisco severity and is not proof of no exploitation. |
| Cisco exploitation statement | The Cisco PSIRT is aware that a public announcement is available for the vulnerabilities that are described in this advisory. The Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory. |
What Happened
The affected APIs do not sufficiently validate input before building database queries. Cisco describes SQL or HQL injection across this advisory's vulnerabilities, allowing unauthorized viewing or modification of data by an attacker with administrative credentials. This grouped description is not proof that every listed CVE has every stated consequence. The SQL/HQL advisory and the September 16 publication notice remain linked below.
Affected Scope
For CVE-2026-76448, Cisco lists both ISE and ISE-PIC. Do not apply the ISE-only scope of CVE-2026-76450, another issue in the same advisory, to this notice.
Record the installed release, patch level, node role, and administrative API exposure. Compare ISE and ISE-PIC separately when planning migration; their supported release paths are not interchangeable.
What To Do Now
- Confirm. Inventory Cisco Identity Services Engine (ISE) and record platform, exact release, patch level, enabled feature, role, and exposure.
- Preserve. Save UTC context plus off-device authentication, management, firewall, network, endpoint, and SIEM evidence before logs rotate or a disruptive change removes context.
- Scope. Compare each ISE or ISE-PIC deployment with the SQL/HQL advisory and its linked bug details, including the fixed-release and support qualifications.
- Reduce exposure. Cisco documents no workaround for this CVE. Use only supported exposure controls while preparing the permanent fix.
- Remediate. Apply the patch or migration path for the installed train below. Do not substitute the fix for a different ISE vulnerability.
- Validate. Confirm each node's resulting release, logging, and service health. Test authorized administrative API access, an expected access denial, and the authentication or identity workflows that depend on the deployment. Record these as rollout checks, not exploit-reproduction evidence.
- Escalate. If evidence or exposure creates concern, open incident response and Cisco TAC recovery work rather than treating patch completion as proof of trust.
Fixed Releases And Mitigation
Permanent Fix
Advisory mapping checked October 2: Cisco directs ISE/ISE-PIC 3.1 and 3.2 users to migrate to a fixed release. It lists 3.3 Patch 12, 3.4 Patch 7, and ISE 3.5 Patch 4. ISE-PIC has reached end of sale, and Cisco identifies 3.4 as its last supported release; do not treat the 3.5 row as an ISE-PIC upgrade path.
Use the SQL/HQL advisory and its linked bug Details to confirm the current target release and upgrade instructions. Do not infer a fix from a combined hardening baseline or from CVE-2026-76460: this advisory requires migration for 3.1 and 3.2 rather than listing patches for those trains.
Workaround Or Temporary Mitigation
No vendor workaround is documented for CVE-2026-76448. Use supported exposure controls only as temporary risk reduction while preparing the permanent software fix.
Important boundary: A workaround, ACL, exposure reduction, or service restriction can reduce risk while the update is prepared, but it does not patch the vulnerable code, prove every attack path is closed, or erase an earlier compromise.
Investigation And Recovery
Review management authentication, account and privilege changes, API and web requests, configuration changes, crashes or restarts, resource pressure, and relevant external network telemetry for the vulnerable period. Preserve original evidence and follow Cisco TAC or incident-response guidance for containment, credential rotation, trusted rebuild, or service restoration when findings warrant it.
Exploitation Evidence
Cisco's exact status at the last check: The Cisco PSIRT is aware that a public announcement is available for the vulnerabilities that are described in this advisory. The Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory.
This CVE was not present in the TechGeeks CISA KEV snapshot at the last check. Cisco's 'not aware' statement and absence from KEV are time-bounded evidence, not claims that exploitation is impossible or has never happened. Severity and exploitation status remain separate signals.
Validation And Boundaries
This notice is documentation-backed. TechGeeks did not reproduce the exploit or independently test every fixed build. It does not prove that all members of the product family are affected, that the activity is widespread, that a clean indicator search excludes compromise, or that an update restored trust. Cisco's live advisory controls affected and fixed release information.
Related TechGeeks Resources
- TechGeeks Security Notice Center
- All Security Notices
- What to Do When a Device Hits CISA KEV
- Router CVE Exposure, Version, and Mitigation Checklist
- IoT Firmware Update and End-of-Support Checklist
- Live Protect and Runtime Vulnerability Shielding
References
Wrap-Up
Record whether CVE-2026-76448 applies. If it does, assign an owner and deadline appropriate to the Medium Cisco advisory SIR, preserve the evidence, complete Cisco's remediation, and document the validated result.
Correction policy: A material Cisco revision to scope, severity, exploitation status, workarounds, fixed software, or recovery guidance triggers an update and a new verification date.
