so to recap this week: two actively exploited Defender zero-days, an unpatched Exchange spoofing vuln, a BitLocker bypass called "YellowKey", AND 137 CVEs from Patch Tuesday. this is not a normal week
Posted by FreeFeedback857@reddit | sysadmin | View on Reddit | 30 comments
let me just list what dropped in the last few days because i feel like i'm taking crazy pills
CVE-2026-41091 and CVE-2026-45498. both in Defender's Malware Protection Engine. both actively exploited in the wild. one local privilege escalation, one denial of service. patches are out but "actively exploited" means someone in your environment may have already had a bad Tuesday before you patched
Exchange spoofing vuln that lets attackers impersonate legitimate users. still unpatched as of today. microsoft's mitigation guidance is essentially "good luck"
YellowKey. a BitLocker bypass exploit. the thing that was supposed to protect you if someone walks out with a laptop. gone
oh and also 137 CVEs from regular Patch Tuesday including critical RCE in Windows DNS Client and Netlogon. you know, just the stuff that holds your entire environment together
i've been doing this for eleven years and i genuinely cannot remember a single week with this density of critical issues hitting simultaneously. we're talking endpoint protection, email infrastructure, full disk encryption, and core network services all in the same five day window
the Exchange one is what's keeping me up. unpatched with no timeline means you're doing compensating controls and hoping. in 2026. for Exchange. again
how is everyone prioritizing this week. and is anyone else's change management process completely collapsing under the volume right now
ciscorick@reddit
AI slop post
TimePlankton3171@reddit
Get used to the new normal
discgman@reddit
Most of us are off for Memorial Day. Good luck 👍
EsOvaAra@reddit
The thumbs up triggers me.
Hebrewhammer8d8@reddit
In Teams, Slack, or other chat Apps?
nlfn@reddit
The fact that outlook has added reaction emojis to emails pisses me off to no end. I'm glad Phil saw the department wide email but he didn't need to give it a thumbs up so that we all get another notification.
EsOvaAra@reddit
All of them
Old-Flight8617@reddit
. 👍
_nethack@reddit
I'm afraid you're wrong... This is a normal week...
Welcome to the new reality where AI driven scanner find exploits and zero days in both old software and AI vibecoded crapware, where most if not all of the capable people have been replaced by some agent, where some clueless bot need to do "quality" control...
This is just the beginning...
idrinkpastawater@reddit
AI is able to find vulnerabilities faster than Microsoft or other Companies can disclose and patch. Kinda scary.
IM_A_MUFFIN@reddit
Kinda weird for a company so invested in promoting AI to not be the first one running these tools against their own codebase.
HisAnger@reddit
Consider the fact that banks are running the old software written on ancient languages.
Honestly not as bad as if it is stable it should not cause issues, in theory ... as all this old software how tons of plugins, automations, etc that grew around it, most of this stuff was made by small companies for a single customer, and they are often outdated and full of holes. Especially python eol for at lest few years is a norm
strongbadfreak@reddit
Wrong, this particular vulnerability is perceived to be put there on purpose by Microsoft intended to be exploited by law enforcement, a back door.
strongbadfreak@reddit
You actually can't just throw a llm/agent at a code base and see if it finds vulnerabilities, it takes an expert in what ever realm of technology to help find them. But now that they are found any script kitty can use an llm to chain attack all sorts of environments.
RCTID1975@reddit
Add onto that the Iran war, the Ukraine war, the Israel war, other instabilities, and the heavy relying or drones and tech to conduct those wars, and there's more money, and more desire to find vulnerabilities.
This only gets worse moving forward
iamwayycoolerthanyou@reddit
Not to mention all of the layoffs used to free up capital to pour into AI endeavors. We've seen the quality erosion on all sorts of products and services. The people either aren't there, are overloaded, or don't care (just like everyone nowadays, seemingly).
Due-Communication724@reddit
All the layoffs and a serious cohort of pissed off people from various backgrounds that might start point and poking holes in these products/platforms. But AI will save the day!
THE_Ryan@reddit
It's the new normal now that Mythos exists.
Kardinal@reddit
Bingo. That is exactly where this is coming from. If not specifically Mythos then AI assisted vulnerability discovery.
thehuntzman@reddit
I could be wrong but I seem to recall reading yellowkey wasn't a mythos related discovery
Kardinal@reddit
It's more about the overall pace and volume of vulnerabilities that we are hearing about being discovered by AI assisted vulnerability evaluations. Not that mythos specifically is responsible for these specific exploitations.
_litz@reddit
And don't forget the CISA breach, too
ibahef@reddit
I wonder how much of this is the state sponsored groups and other high end groups taking their previous high value exploits and expending them on a wider range of targets since they know that they’re about to be found.
mpones@reddit
If you think this is bad, wait until Mythos and whatever OpenAI has cooking up goes public.
The we’re fucked.
Working_One2146@reddit
are you seeing the Defender patches auto-deploying through engine updates or are people having to push them manually? that's the real question for the actively exploited ones, because a lot of orgs assume those roll out silently and dont verify
Helpjuice@reddit
You prioritize as normal based on actual impact, reachable vulnerabilities and existing mitigations. Sometimes there is nothing you can do until a fix is created by a 1st party, 3rd party or internally as a temporary mitigation.
It is all just software at the end of the day and will have more vulnerabilities coming around the corner so having a modern program, process, and capability to secure your systems without impacting availability and integrity is paramount.
Hire the best and it will become easier to do over time, hire cheap and there is no hope in getting a handle on it.
InboxProtector@reddit
Patch Defender first since it's actively exploited, treat Exchange as compromised until Microsoft ships a fix, and if change management is collapsing under this volume that's the real conversation to have with leadership this week.
gregarious119@reddit
Welcome to the new normal
IRideZs@reddit
I read stories like these and am glad I’m in a small/medium organization where my only change management is asking my office mate if it’s cool if I do the thing
kennedye2112@reddit
It is now! 😢