With the recent discovery of the CVE-2025-53770 vulnerability in SharePoint, I'm feeling a bit uneasy about what might be lurking in our SharePoint environment. This zero-day vulnerability allows unauthenticated remote code execution (RCE) with a CVSS score of 9.8, and CISA has confirmed that it is actively being exploited. It's linked to the ToolShell chain and potentially allows attackers to access machine keys and move laterally within systems.
As we hastily apply patches, I can't help but wonder about the data we have stored in SharePoint. Do we have sensitive contracts, personally identifiable information (PII), or just a ton of old, random files? It's tough to assess the exposure when we don't even know what all is stored there.
While it seems like infrastructure teams are managing the technical side well, the visibility into our data and what might have been accessed is still a big question mark. Has anyone else experienced this kind of situation? How are you managing data visibility and risk in light of this vulnerability?
5 Answers
Honestly, this is why I always advise keeping sensitive data off SharePoint. We have strict policies against storing PII there because it's just too risky. I know other teams love it, but I've seen too many issues with it being mismanaged.
Exactly. Our SharePoint is only for public-facing content, and everything sensitive stays on controlled servers.
Totally get where you're coming from! It seems like IT has no clue what the business has dumped into SharePoint, and the business thinks IT has everything covered. We often face the same disconnect. It's frustrating because we end up with these huge data repositories and no idea what's sensitive or critical.
Right? I feel like a lot of organizations are in this boat. The responsibility seems to fall on the IT team, but they shouldn't have to know every document stored there.
LOL, so relatable. We've had similar experiences where users just upload files without a second thought, and then they want us to manage the cleanup!
This CVE-2025-53770 is making us reevaluate everything. We've started using tools that can help us classify and manage the data in SharePoint more effectively. It's honestly a wake-up call to understand what we have and how it's being protected.
Good idea! It’s the perfect time to push for an audit of our SharePoint data to see what’s really at risk.
True, never waste a good incident! We’re looking into digital security posture management tools to enhance our visibility.
It's wild how quickly infrastructure teams can patch vulnerabilities, but identifying what's at risk takes ages. SharePoint is essentially a graveyard for unmonitored data. It really highlights the need for better classification and governance. We don't even know what's stored in there until something like this happens.
Absolutely! We’ve implemented some data discovery tools to start marking sensitive data in SharePoint. It helped us uncover a lot.
Haha, I often refer to SharePoint as a data graveyard too. So many old files just sitting there, it’s a mess!
We’re still on SMB shares too, no SharePoint in sight. Still feel smug about not dealing with this vulnerability directly, but I know many coworkers do.
Same! It's funny how some departments go all-in on SharePoint while others stick to the basics. Keeps things simpler for sure.
True, I feel more secure not having to manage SharePoint. There’s too much hidden danger in that software!
Yes! We’ve had similar policies in place. It just seems like the more open a platform is, the higher the chance for issues.