Sitecore vulnerabilities
- Sitecore has 13 CVE records published between 28 Oct 2023 and 28 Oct 2026, ranking #269 of 420 vendors on this site by that count.
- Of the 13 with a CVSS score, 11 (84.6%) are rated critical or high; 0 (0% of all) have no CVSS score.
- 4 vulnerabilities attributed to Sitecore are listed in CISA's Known Exploited Vulnerabilities (KEV) catalog; the most recent, CVE-2025-53690, was added on 4 Sep 2025.
- 1 of them (25%) is marked as known to be used in ransomware campaigns.
- For the 4 KEV entries with a published CVE record, the median time from CVE publication to KEV listing is 1,133 days.
Records are attributed to Sitecore from the vendor named in the source records. About the data.
CVE records per year
Show data as a table
| Year | CVE records |
|---|---|
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 2 |
| 2020 | 0 |
| 2021 | 1 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 1 |
| 2025 | 12 |
| 2026 | 0 |
2026 is partial (through 28 Oct 2026), shown in a lighter bar.
| Year | Records | Critical | High | Critical or high | Not scored |
|---|---|---|---|---|---|
| 2026 | 0 | 0 | 0 | — | — |
| 2025 | 12 | 2 | 8 | 83.3% | 0% |
| 2024 | 1 | 0 | 1 | 100% | 0% |
| 2023 | 0 | 0 | 0 | — | — |
| 2022 | 0 | 0 | 0 | — | — |
| 2021 | 1 | 1 | 0 | 100% | 0% |
| 2020 | 0 | 0 | 0 | — | — |
| 2019 | 2 | 1 | 1 | 100% | 0% |
| 2018 | 0 | 0 | 0 | — | — |
| 2017 | 0 | 0 | 0 | — | — |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Exploited vulnerabilities in CISA's KEV catalog
| CVE | Product | Name | Added | Ransomware |
|---|---|---|---|---|
| CVE-2025-53690 | Multiple Products | Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability | 2025-09-04 | Unknown |
| CVE-2019-9874 | CMS and Experience Platform (XP) | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 2025-03-26 | Unknown |
| CVE-2019-9875 | CMS and Experience Platform (XP) | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 2025-03-26 | Unknown |
| CVE-2021-42237 | XP | Sitecore XP Remote Command Execution Vulnerability | 2022-03-25 | Known |
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.
Highest exploit-prediction scores (EPSS)
EPSS estimates the probability that a vulnerability is exploited in the next 30 days. These are the 10 highest-scoring Sitecore records today.
| CVE | EPSS | Percentile | Severity | In KEV |
|---|---|---|---|---|
| CVE-2021-42237 | 97.6% | 99.9% | Critical | Yes |
| CVE-2019-9874 | 83.7% | 99.7% | Critical | Yes |
| CVE-2025-53690 | 60.6% | 99.1% | Critical | Yes |
| CVE-2025-34509 | 55.9% | 99% | High | No |
| CVE-2024-46938 | 46.8% | 98.8% | High | No |
| CVE-2025-34511 | 30.4% | 98.2% | High | No |
| CVE-2019-9875 | 25.4% | 97.9% | High | Yes |
| CVE-2025-34510 | 24.8% | 97.9% | High | No |
| CVE-2025-53693 | 19.9% | 97.4% | Critical | No |
| CVE-2025-53694 | 6.7% | 93.9% | High | No |
Source: FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.