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Known exploited vulnerability

CVE-2019-9875

highCVSS 3.1 8.8In CISA KEVEPSS 25%Published · n/a

The short answer

CVE-2019-9875 affects n/a n/a and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-03-26: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

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.

Weakness: CWE-502.

Severity

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Mar 26, 2025

Federal due date Apr 16, 2025

EPSS, next 30 days

25%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Affected products

n/a. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2019-9875 being exploited?

Yes. CISA added CVE-2019-9875 to its Known Exploited Vulnerabilities catalog on 2025-03-26, with a federal remediation due date of 2025-04-16.

How do I fix CVE-2019-9875?

CISA's 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.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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