Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter
Published May 31, 2019 ·Due Apr 16, 2025
8.8
HIGHCVSS 3.1
EPSS 13.79%
Description
Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:S/C:P/I:P/A:P
Date Added
Mar 26, 2025
Patch Due
Apr 16, 2025
Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Mar 26, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 13.79% (0.13795) | 96.41th | v5 (v2026.06.15) |
| Jun 15, 2026 | 14.15% (0.14154) | 96.10th | v5 (v2026.06.15) |
| May 4, 2026 | 56.00% (0.55998) | 98.12th | v4 (v2025.03.14) |
| Nov 22, 2025 | 24.77% (0.24766) | 95.92th | v4 (v2025.03.14) |
| Nov 21, 2025 | 10.08% (0.10082) | 92.79th | v4 (v2025.03.14) |
| Nov 18, 2025 | 29.10% (0.29098) | 96.30th | v4 (v2025.03.14) |
| Nov 8, 2025 | 10.08% (0.10082) | 92.76th | v4 (v2025.03.14) |
| Aug 24, 2025 | 14.24% (0.14242) | 94.13th | v4 (v2025.03.14) |
| May 21, 2025 | 11.89% (0.11888) | 93.35th | v4 (v2025.03.14) |
| Apr 15, 2025 | 15.33% (0.15328) | 94.19th | v4 (v2025.03.14) |
| Apr 5, 2025 | 23.72% (0.23717) | 95.55th | v4 (v2025.03.14) |
| Mar 30, 2025 | 22.41% (0.22413) | 95.34th | v4 (v2025.03.14) |
| Mar 29, 2025 | 72.19% (0.72185) | 98.35th | v4 (v2025.03.14) |
| Mar 27, 2025 | 22.41% (0.22413) | 95.03th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.88% (0.01884) | 81.96th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.25% (0.03253) | 91.06th | v3 (v2023.03.01) |
| May 24, 2024 | 1.74% (0.01735) | 87.87th | v3 (v2023.03.01) |
| Jan 14, 2024 | 1.52% (0.01521) | 85.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.96% (0.01963) | 86.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.46% (0.03458) | 84.78th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.46% (0.03458) | 83.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 30.88% (0.30883) | 96.34th | v2 (v2022.01.01) |
| Feb 3, 2022 | 6.22% (0.06225) | 82.33th | v1 |
| Jan 6, 2022 | 6.22% (0.06225) | 82.16th | v1 |
| Sep 1, 2021 | 1.46% (0.01458) | 72.29th | v1 |
| Apr 14, 2021 | 1.46% (0.01458) | 0.00th | v1 |
References (4)
- https://dev.sitecore.net/Downloads.aspx x_refsource_MISCProductVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9875 government-resourceUS Government Resource
- https://www.synacktiv.com/blog.html x_refsource_MISCThird Party Advisory
- https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf x_refsource_MISCExploitPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://dev.sitecore.net/Downloads.aspx | x_refsource_MISCProductVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9875 | government-resourceUS Government Resource | |
| https://www.synacktiv.com/blog.html | x_refsource_MISCThird Party Advisory | |
| https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf | x_refsource_MISCExploitPatchThird Party Advisory |
Change history (0)
No recorded changes yet.