How severe is CVE-2021-39303?

CVE-2021-39303 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-39303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39303?

CVE-2021-39303 affects Jamf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39303?

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

When was CVE-2021-39303 published?

CVE-2021-39303 was published on 2021-11-12 and last updated on 2026-06-17.

CVE-2021-39303

CVE-2021-39303 is a critical-severity vulnerability in Jamf with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Jamf
Published: 2021-11-12
Last modified: 2026-06-17

Description

The server in Jamf Pro before 10.32.0 has an SSRF vulnerability, aka PI-006352. NOTE: Jamf Nation will also publish an article about this vulnerability.

Frequently asked questions

What is CVE-2021-39303?: The server in Jamf Pro before 10.32.0 has an SSRF vulnerability, aka PI-006352. NOTE: Jamf Nation will also publish an article about this vulnerability.
How severe is CVE-2021-39303?: CVE-2021-39303 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-39303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39303?: CVE-2021-39303 affects Jamf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-39303 published?: CVE-2021-39303 was published on 2021-11-12 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-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-2021-40809 — High (CVSS 8.8): An issue was discovered in Jamf Pro before 10.32.0, aka PI-009921. An account can be granted incorrect privileges 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 →

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