// For flags

CVE-2020-3526

Cisco IOS XE Software Common Open Policy Service Engine Denial of Service Vulnerability

Severity Score

8.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability in the Common Open Policy Service (COPS) engine of Cisco IOS XE Software on Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to crash a device. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a malformed COPS message to the device. A successful exploit could allow the attacker to crash the device.

Una vulnerabilidad en el motor Common Open Policy Service (COPS) de Cisco IOS XE Software en Cisco cBR-8 Converged Broadband Routers, podría permitir a un atacante remoto no autenticado bloquear un dispositivo. La vulnerabilidad es debido a una comprobación insuficiente de la entrada. Un atacante podría explotar esta vulnerabilidad mediante el envío de un mensaje COPS malformado hacia el dispositivo. Una explotación con éxito podría permitir al atacante bloquear el dispositivo.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2019-12-12 CVE Reserved
  • 2020-09-24 CVE Published
  • 2023-06-10 EPSS Updated
  • 2024-11-13 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Ios Xe
Search vendor "Cisco" for product "Ios Xe"
 17.2
Search vendor "Cisco" for product "Ios Xe" and version "17.2"
-
Affected
in Cisco
Search vendor "Cisco"
 Cbr-8
Search vendor "Cisco" for product "Cbr-8"
--
Safe