CVE-2025-52950: A Missing Authorization vulnerability in Juniper Networks Security Director allows an unauthenticated network-

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CRITICAL 9.6DOWNGRADE

CVE-2025-52950 is a critical-severity flaw (CVSS 9.6) affecting security director. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Missing Authorization vulnerability in Juniper Networks Security Director allows an unauthenticated network-based attacker to read or tamper with multiple sensitive resources via the web interface. Numerous endpoints on the Juniper Security Director appliance do not validate authorization and will deliver information to the caller that is outside their authorization level. An attacker can access data that is outside the user's authorization le

Why this priority

Critical severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-862
Published	2025-07-11
Last modified	2026-06-17

Publisher (CNA): Juniper Networks, Inc. · Vendor: juniper

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-07-11 15:15 UTCPublished CVE record published
2026-06-17 09:37 UTCUpdated Record last modified

juniper security director DOWNGRADE

Affected: 24.4.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 24.4.1

1. Check installed version

apt-cache policy security-director || rpm -q security-director || security-director --version

2. No fixed release: DOWNGRADE to a release before 24.4.1 (Debian / Ubuntu)

apt-cache madison security-director sudo apt install security-director=<VERSION_BEFORE_24.4.1> sudo apt-mark hold security-director

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list security-director sudo dnf downgrade security-director-<VERSION_BEFORE_24.4.1> sudo dnf versionlock add security-director

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-52950?

security director: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-52950 being exploited?

CVE-2025-52950 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-52950 affect?

CVE-2025-52950 affects security director. Severity is critical (CVSS 9.6). A Missing Authorization vulnerability in Juniper Networks Security Director allows an unauthenticated network-based attacker to read or tamper with multiple sensitive resources via the web interface. Numerous endpoints on the Juniper Secur

How urgent is CVE-2025-52950?

Priority 44/100. Critical severity

Software pages

Juniper Junos vulnerabilities

References

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