Roundcube webmail zero-day exploited to spy on government entities (CVE-2023-5631)

The Winter Vivern APT group has been exploiting a zero-day vulnerability (CVE-2023-5631) in Roundcube webmail servers to spy on email communications of European governmental entities and a think tank, according to ESET researchers. “Exploitation … Continue reading Roundcube webmail zero-day exploited to spy on government entities (CVE-2023-5631)

“Disappearing” implants, followed by first fixes for exploited Cisco IOS XE zero-day

Cisco has released the first fixes for the IOS XE zero-day (CVE-2023-20198) exploited by attackers to ultimately deliver a malicious implant. The fixes were made available on Sunday, but a curious thing happened the day before: several cybersecurity co… Continue reading “Disappearing” implants, followed by first fixes for exploited Cisco IOS XE zero-day

Citrix NetScaler bug exploited in the wild since August (CVE-2023-4966)

A recently patched Citrix NetScaler ADC/Gateway information disclosure vulnerability (CVE-2023-4966) has been exploited by attackers in the wild since late August 2023, Mandiant researchers have revealed. About CVE-2023-4966 Citrix’s security adv… Continue reading Citrix NetScaler bug exploited in the wild since August (CVE-2023-4966)

Cisco IOS XE zero-day exploited by attackers to deliver implant (CVE-2023-20198)

A previously unknown vulnerability (CVE-2023-20198) affecting networking devices running Cisco IOS XE software is being exploited by a threat actor to take control of the devices and install an implant, Cisco Talos researchers have warned today. About … Continue reading Cisco IOS XE zero-day exploited by attackers to deliver implant (CVE-2023-20198)

October 2023 Patch Tuesday forecast: Operating system updates and zero-days aplenty

September has been a packed month of continuous updates. New operating systems were released from Apple and Microsoft, and several vulnerabilities exploited in web services resulted in a domino effect of zero-day releases for many vendors. If you haven… Continue reading October 2023 Patch Tuesday forecast: Operating system updates and zero-days aplenty

Apple patches another iOS zero-day under attack (CVE-2023-42824)

Apple has released a security update for iOS and iPadOS to fix another zero-day vulnerability (CVE-2023-42824) exploited in the wild. About CVE-2023-42824 CVE-2023-42824 is a kernel vulnerability that could allow a local threat actor to elevate its pri… Continue reading Apple patches another iOS zero-day under attack (CVE-2023-42824)

Critical Atlassian Confluence zero-day exploited by attackers (CVE-2023-22515)

Atlassian has fixed a critical zero-day vulnerability (CVE-2023-22515) in Confluence Data Center and Server that is being exploited in the wild. “Atlassian has been made aware of an issue reported by a handful of customers where external attacker… Continue reading Critical Atlassian Confluence zero-day exploited by attackers (CVE-2023-22515)

Qualcomm patches 3 actively exploited zero-days

Qualcomm has fixed three actively exploited vulnerabilities (CVE-2023-33106, CVE-2023-33107, CVE-2023-33063) in its Adreno GPU and Compute DSP drivers. Vulnerabilities exploited in Qualcomm GPU and DSP drivers The US-based semiconductor company has bee… Continue reading Qualcomm patches 3 actively exploited zero-days

Zero-day in Arm GPU drivers exploited in targeted attacks (CVE-2023-4211)

A vulnerability (CVE-2023-4211) in the kernel drivers for several Mali GPUs “may be under limited, targeted exploitation,” British semiconductor manufacturer Arm has confirmed on Monday, when it released drivers updated with patches. Arm&#8… Continue reading Zero-day in Arm GPU drivers exploited in targeted attacks (CVE-2023-4211)

Critical zero-days in Exim revealed, only 3 have been fixed

Six zero-days in Exim, the most widely used mail transfer agent (MTA), have been revealed by Trend Micro’s Zero Day Initiative (ZDI) last Wednesday. Due to what seems to be insufficient information and poor communication, fixes for only three of … Continue reading Critical zero-days in Exim revealed, only 3 have been fixed