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CVE-2026-76446

MEDIUM 4.9 ALL-YEARS

Published 2026-09-16 · Last modified 2026-09-17 · cisco · NVD: Analyzed

A vulnerability in an API of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to read specific files on the underlying operating system of an affected device. This vulnerability is due to improper restriction of XML external entity references. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to read specific files on the affected system that the underlying process has permission to access.

LIMITED SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.3%chance of exploitation in 30 days · 22nd percentile

○ In CISA KEV○ Public exploit / PoC◆ SSVC: exploitation none, automatable no

Impact if exploited

4.9CVSS 3.1 · MEDIUM · CNA

  • ConfidentialityHigh
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires an admin / high-privilege account
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

No public exploit or proof-of-concept code is catalogued for this CVE (no ExploitDB, Nuclei, or CISA-KEV entry). It may still exist — search GitHub or check the references below.

Affected

Vendors Cisco

Products Cisco Identity Services Engine Software Cisco Ise Passive Identity Connector Identity Services Engine Identity Services Engine Passive Identity Connector

Weakness (CWE)

  • CWE-611: Improper Restriction of XML External Entity Reference

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Known Affected Software Configurations

VendorProductVersion range
CiscoIdentity Services Engine< 3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.3.0
CiscoIdentity Services Engine3.4.0
CiscoIdentity Services Engine3.4.0
CiscoIdentity Services Engine3.4.0
CiscoIdentity Services Engine3.4.0
CiscoIdentity Services Engine3.4.0
CiscoIdentity Services Engine3.4.0
CiscoIdentity Services Engine3.4.0
CiscoIdentity Services Engine3.5.0
CiscoIdentity Services Engine3.5.0
CiscoIdentity Services Engine3.5.0
CiscoIdentity Services Engine3.5.0
CiscoIdentity Services Engine Passive Identity Connector< 3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.3.0
CiscoIdentity Services Engine Passive Identity Connector3.4.0
CiscoIdentity Services Engine Passive Identity Connector3.4.0
CiscoIdentity Services Engine Passive Identity Connector3.4.0
CiscoIdentity Services Engine Passive Identity Connector3.4.0
CiscoIdentity Services Engine Passive Identity Connector3.4.0
CiscoIdentity Services Engine Passive Identity Connector3.4.0
CiscoIdentity Services Engine Passive Identity Connector3.4.0

All CVSS metrics

  • MEDIUM 4.9 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
  • MEDIUM 4.9 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

References

Advisories

Sources: NVD · CVE.org · EPSS