Cisco vulnerability (CVSS 9.9) affecting core networking products; high-impact, enterprise-wide exposure that warrants broad IT notification.
CVE-2026-76302
Cisco hardening release fixes critical improper neutralization (CWE-707) vulnerabilities.
Is CVE-2026-76302 being exploited?
Not confirmed. CVE-2026-76302 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.40% probability of exploitation in the next 30 days.
How severe is CVE-2026-76302?
CVE-2026-76302 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-76302?
Yes. A fix has been recorded for CVE-2026-76302. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76302 affect?
CVE-2026-76302 affects Cisco networking devices and software (multiple products). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76302?
Apply vendor hardening updates immediately; prioritize internet-facing and critical devices.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Potential remote code execution or command injection enabling full device compromise and network disruption.
Immediate action required
- affected>= 10.4 and < 10.4.4
- affected>= 10.2 and < 10.2.8
- affected>= 10.0 and < 10.0.11
- affected>= 9.4 and < 9.4.16
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.