Microsoft right now launched updates to plug no less than 121 safety holes in its Home windows working methods and software program, together with one vulnerability that’s already being exploited within the wild. Eleven of these flaws earned Microsoft’s most-dire “vital” score, that means malware or malcontents might exploit them with little to no interplay from Home windows customers.
The zero-day flaw already seeing exploitation is CVE-2025-29824, a neighborhood elevation of privilege bug within the Home windows Frequent Log File System (CLFS) driver. Microsoft charges it as “vital,” however as Chris Goettl from Ivanti factors out, risk-based prioritization warrants treating it as vital.
This CLFS element of Home windows is not any stranger to Patch Tuesday: Based on Tenable’s Satnam Narang, since 2022 Microsoft has patched 32 CLFS vulnerabilities — averaging 10 per yr — with six of them exploited within the wild. The last CLFS zero-day was patched in December 2024.
Narang notes that whereas flaws permitting attackers to put in arbitrary code are persistently prime general Patch Tuesday options, the information is reversed for zero-day exploitation.
“For the previous two years, elevation of privilege flaws have led the pack and, to date in 2025, account for over half of all zero-days exploited,” Narang wrote.
Rapid7’s Adam Barnett warns that any Home windows defenders accountable for an LDAP server — which suggests nearly any group with a non-trivial Microsoft footprint — ought to add patching for the vital flaw CVE-2025-26663 to their to-do record.
“With no privileges required, no want for consumer interplay, and code execution presumably within the context of the LDAP server itself, profitable exploitation can be a gorgeous shortcut to any attacker,” Barnett mentioned. “Anybody questioning if right now is a re-run of December 2024 Patch Tuesday can take some small solace in the truth that the worst of the trio of LDAP critical RCEs published at the end of last year was possible simpler to take advantage of than right now’s instance, since right now’s CVE-2025-26663 requires that an attacker win a race situation. Regardless of that, Microsoft nonetheless expects that exploitation is extra possible.”
Among the many vital updates Microsoft patched this month are distant code execution flaws in Home windows Distant Desktop companies (RDP), together with CVE-2025-26671, CVE-2025-27480 and CVE-2025-27482; solely the latter two are rated “vital,” and Microsoft marked each of them as “Exploitation Extra Doubtless.”
Maybe probably the most widespread vulnerabilities mounted this month had been in internet browsers. Google Chrome updated to repair 13 flaws this week, and Mozilla Firefox mounted eight bugs, with probably extra updates coming later this week for Microsoft Edge.
Because it tends to do on Patch Tuesdays, Adobe has released 12 updates resolving 54 safety holes throughout a variety of merchandise, together with ColdFusion, Adobe Commerce, Expertise Supervisor Kinds, After Results, Media Encoder, Bridge, Premiere Professional, Photoshop, Animate, AEM Screens, and FrameMaker.
Apple customers could have to patch as effectively. On March 31, Apple launched an enormous safety replace (greater than three gigabytes in measurement) to repair points in a variety of their merchandise, together with at least one zero-day flaw.
And in case you missed it, on March 31, 2025 Apple launched a rather large batch of security updates for a variety of their merchandise, from macOS to the iOS working methods on iPhones and iPads.
Earlier right now, Microsoft included a be aware saying Home windows 10 safety updates weren’t accessible however can be launched as quickly as doable. It seems from shopping askwoody.com that this snafu has since been rectified. Both means, in the event you run into problems making use of any of those updates please depart a be aware about it within the feedback beneath, as a result of the probabilities are good that another person had the identical drawback.
As ever, please think about backing up your information and or gadgets previous to updating, which makes it far easier to undo a software program replace gone awry. For extra granular particulars on right now’s Patch Tuesday, try the SANS Internet Storm Center’s roundup. Microsoft’s replace information for April 2025 is here.
For extra particulars on Patch Tuesday, try the write-ups from Action1 and Automox.
