The PHP security team announced an out-of-cycle release for 14:00 UTC on October 21, 2026, fixing two vulnerabilities rated CVSS v4.0 9.2. The notice did not describe them. watchTowr says both allow remote code execution, and researchers are calling the pair php2shell, a name that is theirs, not PHP's. The notice followed an October 20 le…
CERT-FR advisory CERTFR-2026-AVI-1311 reports multiple vulnerabilities in Ivanti products, covering Connect Secure (ICS), Neurons for UEM and Xtraction. Some of them allow remote arbitrary code execution, privilege escalation, security policy bypass and loss of data confidentiality and integrity. Ivanti states that CVE-2026-104935 is bein…
Google warns that Armory Castle, a suspected PRC state-sponsored espionage actor, exploited the critical BeyondTrust Remote Support vulnerability CVE-2026-102764 (CVSS 9.3) in August 2026, well before BeyondTrust disclosed it on October 15. The actor escalated privileges to root and established persistent access on compromised appliances.…
Multiple ransomware groups, including Qilin and INC, are exploiting CVE-2026-0257, an authentication bypass in Palo Alto Networks PAN-OS GlobalProtect portals and gateways. Unit 42 has been investigating intrusions since early June across many sectors, including finance, healthcare and manufacturing. The flaw was patched on May 13 and ini…
Researchers at Horizon3.ai have published a proof-of-concept exploit for CVE-2026-106173 (CVSS 9.4), a critical path traversal flaw in Fortinet FortiSIEM that lets an unauthenticated attacker achieve remote code execution through specially crafted packets. Fortinet patched the flaw last week. The public PoC lowers the barrier to exploitat…
Researchers describe WP2Shell, a chain of two WordPress core flaws, CVE-2026-63030 and CVE-2026-60137, that lets unauthenticated attackers progress from public REST API endpoints to remote code execution. It affects default installations with no third-party plugin required. Public exploit code exists and exploitation attempts have been ob…
Microsoft Threat Intelligence reports active exploitation of CVE-2026-73570, a command injection flaw in Zimbra Collaboration Suite that allows unauthenticated, zero-click compromise of internet-facing email servers. Attackers deployed webshells, escalated privileges, harvested authentication secrets and staged mailbox data across organiz…
Palo Alto Networks Unit 42 reports active exploitation of CVE-2026-0257, an authentication bypass in the portal and gateway components of PAN-OS GlobalProtect. The flaw lets unauthorized attackers circumvent security controls and open VPN connections. The October 19 update says Unit 42 continues to see exploitation attempts by ransomware …
GreyNoise reports that a single malicious cyber actor, tracked since 7 May 2026, is a suspected Chinese speaker working in UTC+8 and is the same as or related to Red Heron (reported by Acronis), based on the shared C2 domain, malware family, Gitea exploitation and other TTPs. The actor exploited the wp2shell WordPress chain (CVE-2026-6303…
GreyNoise reports that on 31 August 2026 a likely Russian-speaking malicious cyber actor used 45.142.193.132 and AI to develop, test and deploy exploits for PaperCut NG/MF (CVE-2026-81578 and CVE-2026-82078). Using hundreds of AI agents built on OpenAI's Codex harness, a DeepSeek model and public offensive security tools, the actor compro…
On 24 September 2026, GreyNoise observed a malicious actor using 149.104.78.141 to attempt pre-disclosure zero-day exploitation of a Citrix NetScaler Gateway on a Project Swarm participant sensor. No CVE-specific detections existed at the time, but behavioral detections labeled the activity malicious within seconds. The attempt failed to …
CISA added one vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog on 2026-09-14 based on evidence of active exploitation: CVE-2026-76461, a SQL injection vulnerability in Cisco Secure Email Gateway. CISA describes this vulnerability type as a frequent attack vector for malicious cyber actors and a significant risk to the f…
CISA added four vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog on 2026-09-22, citing evidence of active exploitation. The entries affect Check Point (two flaws in multiple products), Arista VeloCloud Orchestrator and F5 BIG-IP APM. The alert gives no exploitation details, threat actor attribution or IOCs. CISA notes …
CISA added one vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog on 2026-09-21 based on evidence of active exploitation: CVE-2026-7273, a stack-based buffer overflow in Zyxel GS1900 Series Switches. CISA describes this vulnerability type as a frequent attack vector for malicious cyber actors and a significant risk to the …
CISA added one vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog on 2026-09-25 based on evidence of active exploitation: CVE-2026-87902, a remote file inclusion flaw in WordPress Core. CISA describes this vulnerability type as a frequent attack vector for malicious cyber actors and a significant risk to the federal enterp…
CISA issued an alert on exploitation of critical zero-day vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway, noting confirmed malicious activity involving at least some of them. The alert references Citrix bulletins for CVE-2026-107406, CVE-2026-88779 and CVE-2026-88771 through CVE-2026-88778. Because NetScaler updates can be …
CISA warns that threat actors are exploiting CVE-2026-104935, a zero-day authentication bypass in Ivanti Connect Secure that allows remote, unauthenticated execution of arbitrary commands. The activity is being used for credential theft and data exfiltration. CISA added the CVE to its Known Exploited Vulnerabilities (KEV) Catalog on Oct. …
CISA added one vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog on 2026-10-04, citing evidence of active exploitation: CVE-2026-88779, an improper restriction of operations within the bounds of a memory buffer flaw in Citrix NetScaler. CISA describes this vulnerability type as a frequent attack vector for malicious cyber…
CISA added two vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog on the basis of evidence of active exploitation: CVE-2025-61624, a path traversal flaw in multiple Fortinet products, and CVE-2026-102764, an authentication bypass by spoofing in BeyondTrust Remote Support. CISA describes these vulnerability types as a fre…
Hacktron AI disclosed CVE-2026-1731, a critical (CVSS 9.9) pre-authentication remote code execution vulnerability in BeyondTrust Remote Support (RS) and older versions of Privileged Remote Access (PRA). An unauthenticated remote attacker could run operating system commands in the context of the site user. Hacktron found the flaw through A…