Quick answers
- Is CVE-2026-76427 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-76427 being exploited in the wild.
- How severe is CVE-2026-76427?
- Medium severity, with a CVSS score of 4.9, published 16 September 2026.
- Which products and versions are affected?
- Cisco Identity Services Engine multiple versions affected.
- Is there a fix for CVE-2026-76427?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-76427 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-76427?
- Check whether you run Cisco Identity Services Engine at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This vulnerability is an XML External Entity (XXE) injection flaw in the offline profiler feed service. The root cause is insufficient configuration of the XML parser used to parse attacker-controlled feed metadata—specifically, external entity resolution is not disabled. An authenticated remote attacker with valid administrative credentials can upload a crafted offline feed package through the administrative interface. A successful exploit allows the attacker to read arbitrary files from the affected device's file system and issue requests to internal systems. Patches are available from Cisco.
Affected products
- Cisco Identity Services Engine multiple versions affected
Timeline
- 2026-09-16: disclosed