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Noticias de ciberseguridad del 21 de octubre de 2026
Resumen de 148 notas de ciberseguridad publicadas el 21 de octubre de 2026. Los temas con más cobertura: vulnerabilidades (64), ciberataques y apt (28), ia y seguridad (20).
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Ciberseguridad
Optiv Launches CyberBOT Cybersecurity Awareness Training Program
Hands-on sessions provide educators, nonprofits, and community leaders with an accessible resource to foster year-round cyber awareness and build more resilient communities.
Survey Finds High-Profile Executives Feel Untouchable as Digital Exposure Turns Into Physical Risk
360 Privacy finds more than 8 in 10 security and wealth professionals say cybersecurity and physical security can no longer be separated.
RansomwareInfraestructura crítica
CISA: Más de 600 organizaciones de infraestructura crítica afectadas por el ransomware SafePay
CISA y otras agencias internacionales advierten que el grupo de ransomware SafePay ha vulnerado a más de 600 organizaciones de infraestructura crítica desde agosto de 2024. Los atacantes acceden mediante credenciales robadas, fuerza bruta y vulnerabilidades en VPNs, utilizando…
Widespread PHP Flaw May Cause Many Site Outages Today
Expect to see quite a few websites serving "404" or "Page Not Found" errors today: Nearly 70 percent of websites need to update their core software to fix a pair of vulnerabilities that allow an attacker to seize full control over affected servers. Experts say there are working…
CVE-2026-109618 and CVE-2026-109619: Critical Unauthenticated Remote Code Execution in PHP
OverviewOn October 21, 2026, the PHP project announced security releases for two critical vulnerabilities in PHP. CVE-2026-109618 can corrupt memory during out-of-memory (OOM) handling, while CVE-2026-109619 is a use-after-free flaw involving state retained between requests.…
VulnerabilidadesExploits y PoC
Critical RCE vulnerabilities in PHP (CVE-2026-109618, CVE-2026-109619)
We discuss the incident involving the leak of information about vulnerabilities CVE-2026-109618 and CVE-2026-109619. Kaspersky solutions detect the PHP2Shell exploit: we’ll walk you through examples using KEDR, KATA, and KES.
VulnerabilidadesExploits y PoC
Critical PHP Vulnerability (CVE-2026-109618, CVE-2026-109619) [infocon yellow], (Wed, Oct 21st)
PHP.net announced that it will release a critical update today. We decided to change the infoCon to YELLOW due to the widespread use of PHP, the expected severity of the flaw (CVSS 9.4), and the availability of early PoC exploits ahead of the patch becoming available. 
VulnerabilidadesExploits y PoC
Two critical RCEs in PHP core
Cisco Talos is tracking the disclosure of two unauthenticated remote code execution (RCE) flaws in PHP core, dubbed “php2shell”, triggered by a plain HTTP request and exploitable before any application code runs, affecting every PHP build since 5.4. Based on the entities…
‘Context Bombs’ Cut AI Attack Success by Misleading Agents With Fake Targets
Deceptive prompts lure AI agents into decoys and dead ends, cutting attack success by up to 91% in tests and raising the cost of a successful attack 23-fold.
Apache Tomcat corrige 8 fallos de seguridad que permitirían saltar la autenticación
Apache Tomcat ha corregido ocho fallos de seguridad que podrían permitir a los atacantes omitir las verificaciones de contraseñas, exponer datos entre usuarios e interrumpir conexiones. Las correcciones fueron publicadas el 20 de octubre de 2026 en las versiones 11.0.27, 10.1.61…
VulnerabilidadesExploits y PoC
CVE-2026-109618 / CVE-2026-109619 | PHP Core Remote Code Execution Vulnerabilities (PHP2Shell)
PHP2Shell refers to two critical PHP core vulnerabilities, CVE-2026-109618 and CVE-2026-109619, that can enable unauthenticated remote code execution. Explore the out-of-memory corruption and stale global state attack paths, affected PHP versions, exploitation conditions, and…
VulnerabilidadesExploits y PoC
High-Severity Flaws Exploited in Three Days as Ransomware Dominates Q3: Rapid7
Rapid7’s Q3 analysis finds high-severity flaws exploited within three days on average, while AI appeared in just 8% of tracked incidents.
Hundreds of websites taken offline as concern grows over two PHP vulnerabilities
The maintainers of the globally used PHP scripting language released patches for two vulnerabilities after alerting users that the bugs were severe.
Ciberseguridad
eMudhra security blunder left trusted CA signing keys exposed to anyone
Eight intermediate certificates issued by Indian certificate authority eMudhra were secured with private keys so weak that anyone could recover them from the public certificates in under a second. On its website, the company highlights that it has issued more than 60 million…