CERT-PL

Hackers exploit RouterOS flaws to hijack MikroTik devices without authentication

Hackers exploit RouterOS flaws to hijack MikroTik devices without authentication 2026-09-07 at 17:07 By Sinisa Markovic Attackers are exploiting a chain of RouterOS vulnerabilities to hijack MikroTik devices with SSH open to the internet, CERT Polska found. CERT Polska, Poland’s national CSIRT team, have discovered six vulnerabilities in RouterOS and coordinated their disclosure with MikroTik. […]

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Unpatched Zimbra servers are falling to CVE-2026-73570 attacks

Unpatched Zimbra servers are falling to CVE-2026-73570 attacks 2026-08-25 at 13:03 By Zeljka Zorz At least 274 internet-facing Zimbra instances have been compromised by unknown attackers via CVE-2026-73570, the Shadowserver Foundation shared on Monday. About CVE-2026-73570 Zimbra Collaboration Suite (ZCS) is a communication and collaboration platform popular with organizations that need to have control over […]

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Previously unseen entry vector used to breach Polish energy plant

Previously unseen entry vector used to breach Polish energy plant 2026-08-11 at 08:00 By Sinisa Markovic The December 29 cyberattack on a Polish combined heat and power (CHP) plant was the first observed case of attackers gaining access to an OT network through a private APN, according to CERT Polska. The private APN is a […]

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Poland’s energy control systems were breached through exposed VPN access

Poland’s energy control systems were breached through exposed VPN access 2026-02-06 at 16:27 By Sinisa Markovic On 29 December 2025, coordinated cyberattacks unfolded across Poland’s critical infrastructure, targeting energy and industrial organizations. The attackers struck numerous wind and solar farms, a private manufacturing company, and a heat and power (CHP) plant, but failed to negatively […]

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Roundcube RCE: Dark web activity signals imminent attacks (CVE-2025-49113)

Roundcube RCE: Dark web activity signals imminent attacks (CVE-2025-49113) 2025-06-09 at 15:18 By Zeljka Zorz With an exploit for a critical Roundcube vulnerability (CVE-2025-49113) being offered for sale on underground forums and a PoC exploit having been made public, attacks exploiting the flaw are incoming and possibly already happening. According to the Shadowserver Foundation, there […]

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