Is Sitecore safe right now?
Nothing new in 90 days
No Sitecore flaws have been added to CISA's exploited list in the last 90 days (the most recent was Sep 4, 2025). Keep automatic updates on: that can change any day.
0exploited in the last 30 days
0in the last 90 days
0zero-days in 2026
4on CISA's list, all time
Earlier exploited flaws
- Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability Zero-day
- Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
- Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
- Sitecore XP Remote Command Execution Vulnerability
By year
| Year | Exploited flaws added | Zero-days |
|---|---|---|
| 2026 (so far) | 0 | 0 |
| 2025 | 3 | 1 |
| 2024 | 0 | 0 |
| 2023 | 0 | 0 |
| 2022 | 1 | 0 |
Questions
Is Sitecore safe right now?
No Sitecore flaws have been added to CISA's exploited list in the last 90 days (the most recent was Sep 4, 2025). Keep automatic updates on: that can change any day. Confirm with the vendor's own advisories and install updates as soon as they're available.
How many Sitecore vulnerabilities have been exploited?
4 flaws are on CISA's list of vulnerabilities known to be exploited in real attacks, 1 of them used by ransomware.
Covers products matching sitecore. Sources: CISA's Known Exploited Vulnerabilities catalog and the vendors' own advisories. Updated every hour. General information only; confirm details with the vendor.