Vulnerability · Published Sep 25, 2024 · Assigned by cisco

CVE-2024-20436

High 8.6

In plain English

A high-severity null pointer dereference in Cisco IOS XE Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.9%top 41.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the HTTP Server feature of Cisco IOS XE Software when the Telephony Service feature is enabled could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a null pointer dereference when accessing specific URLs. An attacker could exploit this vulnerability by sending crafted HTTP traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, causing a DoS condition on the affected device.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS XE Software	3.9.1S3.9.2S3.9.0aS3.10.0S3.10.1S3.10.2S3.10.3S3.10.4S

Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References

cisco-sa-httpsrvr-dos-yOZThut