How severe is CVE-2021-40809?

CVE-2021-40809 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-40809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40809?

CVE-2021-40809 affects Jamf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-40809 published?

CVE-2021-40809 was published on 2021-12-01 and last updated on 2026-06-17.

CVE-2021-40809

CVE-2021-40809 is a high-severity vulnerability in Jamf with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Jamf
Published: 2021-12-01
Last modified: 2026-06-17

Description

An issue was discovered in Jamf Pro before 10.32.0, aka PI-009921. An account can be granted incorrect privileges in response to authentication that uses specific sign-on workflows.

Frequently asked questions

What is CVE-2021-40809?: An issue was discovered in Jamf Pro before 10.32.0, aka PI-009921. An account can be granted incorrect privileges in response to authentication that uses specific sign-on workflows.
How severe is CVE-2021-40809?: CVE-2021-40809 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-40809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40809?: CVE-2021-40809 affects Jamf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40809 published?: CVE-2021-40809 was published on 2021-12-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jamf:jamf:*:*:*:*:pro:*:*:*

More vulnerabilities in Jamf

CVE-2023-31224 — Critical (CVSS 9.8): There is broken access control during authentication in Jamf Pro Server before 10.46.1.
CVE-2021-39303 — Critical (CVSS 9.8): The server in Jamf Pro before 10.32.0 has an SSRF vulnerability, aka PI-006352. NOTE: Jamf Nation will also publish an…
CVE-2019-17076 — Critical (CVSS 9.8): An issue was discovered in Jamf Pro 9.x and 10.x before 10.15.1. Deserialization of untrusted data when parsing JSON in…
CVE-2018-10465 — High (CVSS 8.8): Jamf Pro 10.x before 10.3.0 has Incorrect Access Control. Jamf Pro user accounts and groups with access to log in to…
CVE-2021-35037 — Medium (CVSS 6.1): Jamf Pro before 10.30.1 allows for an unvalidated URL redirect vulnerability affecting Jamf Pro customers who host…
CVE-2021-30125 — Medium (CVSS 6.1): Jamf Pro before 10.28.0 allows XSS related to inventory history, aka PI-009376.

All CVEs affecting Jamf →

Other CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities

CVE-2026-47938 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by a Server-Side Request Forgery (SSRF)…
CVE-2026-35431 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Microsoft Entra ID Entitlement Management allows an unauthorized attacker to…
CVE-2026-32186 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Microsoft Bing allows an unauthorized attacker to elevate privileges over a…
CVE-2026-33107 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Azure Databricks allows an unauthorized attacker to elevate privileges over a…
CVE-2026-32871 — Critical (CVSS 10.0): FastMCP is a Pythonic way to build MCP servers and clients. Prior to version 3.2.0, the OpenAPIProvider in FastMCP…
CVE-2026-32169 — Critical (CVSS 10.0): Server-side request forgery (ssrf) in Azure Cloud Shell allows an unauthorized attacker to elevate privileges over a…

Browse all CWE-918 (Server-Side Request Forgery (SSRF)) vulnerabilities →