Risk Letters

Exploited vulnerability

CVE-2023-20109

TLP:CLEAR

Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability

Cisco IOS and IOS XE contain an out-of-bounds write vulnerability in the Group Encrypted Transport VPN (GET VPN) feature that could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute malicious code or cause a device to crash.

Facts

  • Vendor: Cisco
  • Product: IOS and IOS XE
  • CVSS: 6.6
  • EPSS (probability of exploitation within 30 days): 2.5 %
  • On CISA's Known Exploited Vulnerabilities list since: 10 October 2023
  • First known exploitation: 10 October 2023
  • CISA's deadline for US federal agencies: 31 October 2023
  • Weakness: CWE-787
  • First seen by Risk Letters: 10 October 2023

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

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