Cisco has released security updates for a high-severity Webex vulnerability that allows unauthenticated attackers to gain client-side remote code execution using malicious meeting invite links.
Exploit Attempts for Cisco Smart Licensing Utility CVE-2024-20439 and CVE-2024-20440, Author: Johannes Ullrich
Cisco recently released an advisory for CVE-2024-20439 here. (nvd) Please note I did not discover this vulnerability, I just reverse engineered the vulnerability from the advisory
Cisco warned customers today of a vulnerability in Webex for BroadWorks that could let unauthenticated attackers access credentials remotely.
A fresh post on the Kraken ransomware group’s leak website refers to data stolen in a 2022 cyberattack, Cisco says.
The data, a list of credentials apparently exfiltrated from Cisco’s systems, appeared over the weekend on a new data leak site operated by the Kraken ransomware group.
“Cisco is aware of certain reports regarding a security incident. The incident referenced in the reports occurred back in May 2022, and we fully addressed it at that time,” a Cisco spokesperson said, responding to a SecurityWeek inquiry.
Between December 2024 and January 2025, Recorded Future’s Insikt Group identified a campaign exploiting unpatched internet-facing Cisco network devices primarily associated with global telecommunications providers. Victim organizations included a United States-based affiliate of a United Kingdom-based telecommunications provider and a South African telecommunications provider. Insikt Group attributes this activity to the Chinese state-sponsored threat activity group tracked by Insikt Group as RedMike, which aligns with the Microsoft-named group Salt Typhoon. Using Recorded Future® Network Intelligence, Insikt Group observed RedMike target and exploit unpatched Cisco network devices vulnerable to CVE-2023-20198, a privilege escalation vulnerability found in the web user interface (UI) feature in Cisco IOS XE software, for initial access before exploiting an associated privilege escalation vulnerability, CVE-2023-20273, to gain root privileges. RedMike reconfigures the device, adding a generic routing encapsulation (GRE) tunnel for persistent access.
Cisco has fixed two critical Identity Services Engine (ISE) vulnerabilities that can let attackers with read-only admin privileges bypass authorization and run commands as root.
In July 2024, we identified a vulnerability that resulted in access to millions of live customer support messages for organizations using Cisco Webex Connect.
IntelBroker has leaked 2.9 Gb of data stolen recently from a Cisco DevHub instance, but claims it’s only a fraction of the total.
Cisco on Dec. 2 updated an advisory from March 18 about a 10-year-old vulnerability in the WebVPN login page of Cisco’s Adaptive Security Appliance (ASA) software that could let an unauthenticated remote attacker conduct a cross-site scripting (XSS) attack.
In its recent update, the Cisco Product Security Incident Response Team (PSIRT) said it became aware of additional attempted exploitation of this vulnerability in the wild last month.
The company has said it didn't suffer a breach, but announced a threat actor downloaded data on a public-facing DevHub environment.
Who doesn't love abusing buggy appliances, really?
China-linked threat actors compromised some U.S. internet service providers as part of a cyber espionage campaign code-named Salt Typhoon.
The state-sponsored hackers aimed at gathering intelligence from the targets or carrying out disruptive cyberattacks.
The Wall Street Journal reported that experts are investigating into the security breached to determine if the attackers gained access to Cisco Systems routers, which are core network components of the ISP infrastructures.
Cisco has removed a backdoor account in the Cisco Smart Licensing Utility (CSLU) that can be used to log into unpatched systems with administrative privileges.
Cisco has fixed a critical severity vulnerability that lets attackers add new users with root privileges and permanently crash Security Email Gateway (SEG) appliances using emails with malicious attachments.
Tracked as CVE-2024-20401, this arbitrary file write security flaw in the SEG content scanning and message filtering features is caused by an absolute path traversal weakness that allows replacing any file on the underlying operating system.
Discover key insights into the recently disclosed Cisco NX-OS software CLI vulnerability (CVE-2024-20399) affecting numerous Cisco Nexus devices.
Cisco has patched an NX-OS zero-day exploited in April attacks to install previously unknown malware as root on vulnerable switches.
A previously discovered vulnerability affecting self-hosted Cisco Webex instances similarly affected the Webex cloud service.
Sources suspect China is behind the targeted exploitation of two zero-day vulnerabilities in Cisco’s security appliances.
Cisco said one of the providers it uses to send multifactor authentication (MFA) messages was breached by a threat actor on April 1.
In emails to customers, Cisco said the incident specifically affected Duo — a multifactor authentication company it acquired in 2018. The attacker breached the system of a telephony supplier that Duo uses to send MFA messages through texts and phone calls to its customers.
