Buffer overflow in Cisco 1000_integrated_services_router

CVE-2021-34727

A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when an affe…

Vulnerability class: Buffer Overflow

EPSS: 0.025 (83.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-34727?
CVE-2021-34727 is a critical-severity vulnerability in Cisco 1000_integrated_services_router, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-09-23.
How severe is CVE-2021-34727?
Critical severity. CVSS v3 base score is 9.8 out of 10.