What is CVE-2020-3408?

CVE-2020-3408 is a high-severity vulnerability in Cisco Ios, classified under Incorrect Regular Expression. CVSS score: 8.6/10. Published 2020-09-24.

How severe is CVE-2020-3408?

High severity. CVSS v3 base score is 8.6 out of 10.

Is CVE-2020-3408 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cisco Ios

CVE-2020-3408

A vulnerability in the Split DNS feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabi…

EPSS: 0.012 (78.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Cisco Ios — versions n/a

Weakness classification (CWE)

CWE-185 — Incorrect Regular Expression

Public proof-of-concept exploits

Live-Hack-CVE/CVE-2020-3408

References

20200924 Cisco IOS and IOS XE Software Split DNS Denial of Service Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2020-3408?: CVE-2020-3408 is a high-severity vulnerability in Cisco Ios, classified under Incorrect Regular Expression. CVSS score: 8.6/10. Published 2020-09-24.
How severe is CVE-2020-3408?: High severity. CVSS v3 base score is 8.6 out of 10.
Is CVE-2020-3408 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.