Is CVE-2025-52947 in the CISA KEV catalog?

No. CVE-2025-52947 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-52947?

CVE-2025-52947 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-52947?

CVE-2025-52947 has an EPSS score of 0.26% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-52947?

Upgrade junos to 21.2 or later.

CVE & CISA-KEV Catalog

CVE-2025-52947

MEDIUM

6.5

CVSS v3

NVD

Description

An Improper Handling of Exceptional Conditions vulnerability in route processing of Juniper Networks Junos OS on specific end-of-life (EOL) ACX Series platforms allows an attacker to crash the Forwarding Engine Board (FEB) by flapping an interface, leading to a Denial of Service (DoS). On ACX1000, ACX1100, ACX2000, ACX2100, ACX2200, ACX4000, ACX5048, and ACX5096 devices, FEB0 will crash when the primary path port of the L2 circuit IGP (Interior Gateway Protocol) on the local device goes down. This issue is seen only when 'hot-standby' mode is configured for the L2 circuit. This issue affects Junos OS on ACX1000, ACX1100, ACX2000, ACX2100, ACX2200, ACX4000, ACX5048, and ACX5096: * all versions before 21.2R3-S9.

CWE-755

How to fix

Remediation Available

junosNVD

Affected:< 21.2Fixed in:21.2CVE-2025-52947derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.26%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Vendor Advisory1

supportportal.juniper.net

Embed a live status badge for CVE-2025-52947

Markdown

[![CVE-2025-52947](https://tridentstack.com/cve/badge/CVE-2025-52947.svg)](https://tridentstack.com/cve/CVE-2025-52947)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-52947"><img src="https://tridentstack.com/cve/badge/CVE-2025-52947.svg" alt="CVE-2025-52947"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-23.