Xfinity Customer Data Compromised in Attack Exploiting CitrixBleed Vulnerability

[rbc]

Comcast’s Xfinity is informing customers that their information has been compromised in a cyberattack that involved exploitation of the vulnerability known as CitrixBleed.

CitrixBleed, officially tracked as CVE-2023-4966, is a critical vulnerability affecting Citrix’s Netscaler ADC and Gateway appliances. Malicious actors can exploit the flaw to hijack existing sessions, which can give them access to the targeted organization’s systems.

Patches were announced by Citrix on October 10, but the vulnerability had been exploited as a zero-day since August. Mass exploitation of CitrixBleed was underway a few weeks after the patch was announced, and reports started emerging about its use in attacks aimed at major companies.

In Xfinity’s case, the telecommunications and smart home solutions provider said it “promptly patched and mitigated” the vulnerability within its systems. However, it discovered on October 25 during a routine cybersecurity exercise that CitrixBleed had been exploited against its systems, with hackers having access between October 16 and 19.
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Xfinity Customer Data Compromised in Attack Exploiting CitrixBleed Vulnerability