Tag: cve 2026 42897
8 articles
Russian Spies Expand Email Attacks to Outlook
Russian spies have set their sights on Microsoft Outlook Web Access, exploiting a cross-site scripting flaw to launch targeted email attacks, just days after being called out for their abuse of a zero-day vulnerability in Zimbra Collaboration Suite. The notorious group, tracked as TA488 or Laundry Bear, has adapted their sneaky half-click technique to compromise on-premises Exchange Servers.
Russian Hackers Exploit Microsoft OWA Flaw to Maintain Mailbox Access
Russian hackers have found a sneaky way to keep access to Microsoft mailboxes by exploiting a flaw in Outlook Web Access, making it tough to shake them off even with a full system overhaul. Simply put, these cyber intruders can stick around unless their presence is manually erased from the Exchange server.
Russian Hackers Exploit Exchange Zero-Day for Long-Term Mailbox Access
Russian hackers have unleashed a powerful tool, dubbed OWAReaper, exploiting a zero-day flaw in Exchange Outlook Web Access to gain long-term access to mailboxes, with Proofpoint hailing it as the most sophisticated backdoor delivered via half-click exploits they've ever seen. The attack, linked to the Russian state-sponsored group Laundry Bear, cleverly uses a cross-site scripting flaw to execute arbitrary JavaScript in victims' browsers.
Russia-Aligned TA488 Exploits Outlook Web Access With Persistent Implant
A Russia-aligned espionage group, known as TA488, has launched a sophisticated attack using a half-click backdoor, exploiting a flaw in Outlook Web Access to deploy a persistent implant. This new implant, dubbed OWAReaper, allows the group to maintain server-side access, marking a significant escalation in their cyber operations.
Microsoft Fixes Zero-Day Flaw in Exchange Server Exploited in Attacks
Microsoft has patched a high-severity flaw in Exchange Server, known as CVE-2026-42897, which allowed hackers to execute malicious JavaScript in victims' browsers simply by sending a specially crafted email. This zero-day vulnerability was actively exploited in attacks, putting Outlook Web Access users at risk.
Microsoft Exchange Servers Targeted in Active Exploitation
Microsoft has sounded the alarm on a critical vulnerability in on-premise Exchange Servers, known as CVE-2026-42897, that's currently being exploited by hackers - and the company is urging affected users to act fast. A temporary fix is in place, with a permanent patch on the way.
Microsoft Warns of Severe Zero-Day Flaw in On-Prem Exchange Servers
Microsoft just sounded the alarm on a severe zero-day flaw in on-prem Exchange servers, warning that a high-severity vulnerability could let attackers send malicious code to victims via specially crafted emails. This flaw, tracked as CVE-2026-42897, has already been automatically mitigated if the EM Service is enabled, which it is by default.
Microsoft Exchange Servers Targeted by Active CVE-2026-42897 Exploit
Microsoft warns of a high-severity vulnerability, CVE-2026-42897, in its Exchange Servers, allowing attackers to spoof network communications via a cleverly crafted email. This cross-site scripting flaw has been actively exploited, earning a concerning CVSS score of 8.1.