Microsoft at the moment issued safety updates to repair not less than 56 vulnerabilities in its Home windows working programs and supported software program, together with two zero-day flaws which can be being actively exploited.
All supported Home windows working programs will obtain an replace this month for a buffer overflow vulnerability that carries the catchy title CVE-2025-21418. This patch ought to be a precedence for enterprises, as Microsoft says it’s being exploited, has low assault complexity, and no necessities for consumer interplay.
Tenable senior employees analysis engineer Satnam Narang famous that since 2022, there have been 9 elevation of privilege vulnerabilities on this similar Home windows part — three every year — together with one in 2024 that was exploited within the wild as a zero day (CVE-2024-38193).
“CVE-2024-38193 was exploited by the North Korean APT group often called Lazarus Group to implant a brand new model of the FudModule rootkit as a way to preserve persistence and stealth on compromised programs,” Narang mentioned. “Presently, it’s unclear if CVE-2025-21418 was additionally exploited by Lazarus Group.”
The opposite zero-day, CVE-2025-21391, is an elevation of privilege vulnerability in Home windows Storage that could possibly be used to delete recordsdata on a focused system. Microsoft’s advisory on this bug references one thing referred to as “CWE-59: Improper Hyperlink Decision Earlier than File Entry,” says no consumer interplay is required, and that the assault complexity is low.
Adam Barnett, lead software program engineer at Rapid7, mentioned though the advisory gives scant element, and even presents some obscure reassurance that ‘an attacker would solely be capable to delete focused recordsdata on a system,’ it will be a mistake to imagine that the influence of deleting arbitrary recordsdata can be restricted to knowledge loss or denial of service.
“As way back as 2022, ZDI researchers set out how a motivated attacker might parlay arbitrary file deletion into full SYSTEM entry utilizing methods which additionally contain inventive misuse of symbolic hyperlinks,”Barnett wrote.
One vulnerability patched at the moment that was publicly disclosed earlier is CVE-2025-21377, one other weak point that would permit an attacker to raise their privileges on a weak Home windows system. Particularly, that is one more Home windows flaw that can be utilized to steal NTLMv2 hashes — primarily permitting an attacker to authenticate because the focused consumer with out having to log in.
Based on Microsoft, minimal consumer interplay with a malicious file is required to use CVE-2025-21377, together with choosing, inspecting or “performing an motion aside from opening or executing the file.”
“This trademark linguistic ducking and weaving could also be Microsoft’s approach of claiming ‘if we advised you any extra, we’d give the sport away,’” Barnett mentioned. “Accordingly, Microsoft assesses exploitation as extra possible.”
The SANS Web Storm Heart has a helpful checklist of all of the Microsoft patches launched at the moment, listed by severity. Home windows enterprise directors would do effectively to control askwoody.com, which frequently has the inside track on any patches inflicting issues.
It’s getting tougher to purchase Home windows software program that isn’t additionally bundled with Microsoft’s flagship Copilot synthetic intelligence (AI) characteristic. Final month Microsoft began bundling Copilot with Microsoft Workplace 365, which Redmond has since rebranded as “Microsoft 365 Copilot.” Ostensibly to offset the prices of its substantial AI investments, Microsoft additionally jacked up costs from 22 % to 30 % for upcoming license renewals and new subscribers.
Workplace-watch.com writes that current Workplace 365 customers who’re paying an annual cloud license do have the choice of “Microsoft 365 Basic,” an AI-free subscription at a cheaper price, however that many purchasers will not be supplied the choice till they try and cancel their current Workplace subscription.
In different safety patch information, Apple has shipped iOS 18.3.1, which fixes a zero day vulnerability (CVE-2025-24200) that’s exhibiting up in assaults.
Adobe has issued safety updates that repair a complete of 45 vulnerabilities throughout InDesign, Commerce, Substance 3D Stager, InCopy, Illustrator, Substance 3D Designer and Photoshop Parts.
Chris Goettl at Ivanti notes that Google Chrome is transport an replace at the moment which is able to set off updates for Chromium primarily based browsers together with Microsoft Edge, so be looking out for Chrome and Edge updates as we proceed by the week.
