# CVE-2026-76494: Cisco Expressway Series code injection

Source: https://junglewise.ai/threats/cve-2026-76494-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-76494 · Severity: high · CVSS 7.8 · Published 2026-10-21

Cisco Expressway Series is video communications infrastructure software used by enterprises to manage media workflows and secure connections. This vulnerability allows remote attackers without authentication to inject and execute code on affected devices, potentially leading to complete system compromise and lateral movement within corporate networks.

Technologies: [Cisco Expressway-C](https://junglewise.ai/threats/technologies/expressway-c), [Cisco Expressway-E](https://junglewise.ai/threats/technologies/expressway-e). Vendors: [Cisco](https://junglewise.ai/threats/vendors/cisco).

## Quick answers

**Is CVE-2026-76494 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-76494 being exploited in the wild.

**How severe is CVE-2026-76494?** High severity, with a CVSS score of 7.8, published 21 October 2026.

**Which products and versions are affected?** Cisco Expressway-C X14 and earlier; X15.5.3 and earlier; Cisco Expressway-E X14 and earlier; X15.5.3 and earlier.

**Is there a fix for CVE-2026-76494?** Yes: fixed in Expressway-C and Expressway-E: X15.5.20 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-76494 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-76494?** Check whether you run Cisco Expressway-C or Cisco Expressway-E 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.

## How to fix

- Fixed in Expressway-C and Expressway-E: X15.5.20 and later

## Technical details

CVE-2026-76494 represents a code injection vulnerability (CWE-94) in Cisco Expressway Core and Expressway Edge devices. The vulnerability is remotely exploitable over the network without authentication or user interaction. An attacker can execute arbitrary code on the device, gaining full control of the communications platform.

## Affected products

- Cisco Expressway-C X14 and earlier; X15.5.3 and earlier
- Cisco Expressway-E X14 and earlier; X15.5.3 and earlier

## Timeline

- 2026-10-21: disclosed

## References

- [https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-exwy-hardening-FhcqBVcs](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-exwy-hardening-FhcqBVcs)

## Related threats

- [Cisco Expressway Series insecure temporary files](https://junglewise.ai/threats/cve-2026-76497-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Cisco Expressway Series improper link resolution](https://junglewise.ai/threats/cve-2026-76496-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Cisco Expressway Series incorrect permission assignment](https://junglewise.ai/threats/cve-2026-76495-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Cisco Expressway Series uncaught exceptions denial of service](https://junglewise.ai/threats/cve-2026-76493-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)
- [Cisco Expressway Series out-of-bounds write and code injection flaws](https://junglewise.ai/threats/cve-2026-76490-as-part-of-cisco-s-ongoing-commitment-to-proactive-security-and)