Risk Letters

Exploited vulnerability

CVE-2020-3118

TLP:CLEAR

Cisco IOS XR Software Discovery Protocol Format String Vulnerability

Cisco IOS XR improperly validates string input from certain fields in Cisco Discovery Protocol messages. Exploitation could allow an unauthenticated, adjacent attacker to execute code with administrative privileges or cause a reload on an affected device.

Facts

  • Vendor: Cisco
  • Product: IOS XR
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 11.7 %
  • On CISA's Known Exploited Vulnerabilities list since: 3 November 2021
  • First known exploitation: 3 November 2021
  • CISA's deadline for US federal agencies: 3 May 2022
  • Weakness: CWE-134
  • First seen by Risk Letters: 3 November 2021

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD