The 5-Minute Cyber Brief
Good morning. CISA has given federal agencies three days to patch an actively exploited Zimbra flaw. After that: attacks on the miniOrange SAML plugin for WordPress, an unpatched Calix router flaw, a critical Keycloak password-reset bug and Talos research on UAT-10147.
Lead Story
CISA orders urgent patching of actively exploited Zimbra flaw
The Cybersecurity and Infrastructure Security Agency (CISA) has ordered U.S. government agencies to patch an actively exploited vulnerability in Zimbra Collaboration Suite (ZCS) within three days.
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Why it matters: Internet-facing mail servers are still prime targets, and more than 12,100 Zimbra systems are visible online. A patch exists. The harder part is proving which servers are exposed, whether SNMP notifications are enabled and whether compromise indicators are already in the logs.
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Original source: BleepingComputer
Also Worth Your Attention
Hackers target WordPress sites in miniOrange auth bypass attacks
Hackers are attempting to exploit two critical authentication bypass vulnerabilities in the miniOrange SAML 2.0 Single Sign On plugin for WordPress that can be used to forge SAML responses and log in as administrators.
Why it matters: WordPress SSO plugins sit on the login path. If a forged SAML assertion becomes an admin session, an attacker can quietly take over the site, change content and abuse anything that trusts it. Patch the plugin, then check for signs of that.
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Unpatched Calix flaw lets hackers bypass NAT to expose internal devices
An unpatched flaw in Calix GS7 XGS residential routers lets unauthenticated attackers create external port-forwarding rules, which could expose internal devices that owners assumed were protected by NAT.
Why it matters: A remote attacker who can open inbound ports on a customer or branch edge router can reach systems behind it that were never meant to be public. There is no patch yet.
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Critical Keycloak Password Reset Flaw Could Let Unauthenticated Attackers Take Over Any Account
Keycloak and Red Hat shipped fixes for CVE-2026-18963, a critical flaw in the reset-credentials flow that can let an unauthenticated attacker bypass the emailed action token and force a password reset for any account.
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Why it matters: Keycloak handles sign-in for the apps behind it. If the password reset flow can be subverted, an attacker can skip phishing and go straight at the account recovery path many teams treat as a safety net.
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UAT-10147: Chinese-speaking adversary integrates agentic AI into post-compromise operations
Cisco Talos discovered a Chinese-speaking cybercrime group, tracked as UAT-10147, that targets many kinds of vulnerable web servers. Its report covers the countries affected, the possible impact of BadIIS infections, the attack chain and post-compromise tactics.
Why it matters: The operators are using AI to speed up exploit refinement, troubleshooting and persistence work. That cuts the human effort needed to run complex post-compromise operations at scale.
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