Advisoriesby IbisCiscoCVE-2026-20268
Cisco IOS XE Software: memory corruption
No fix yet
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-20268 are related to issues with improper restriction of operations within the bounds of a memory buffer that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-119.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Cisco IOS XE Software Product | <= 17.2.1a | No fix yet |
| <= 16.12.1y | No fix yet | |
| <= 16.12.3s | No fix yet | |
| <= 16.7.1b | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-119