Is CVE-2025-52953 being actively exploited?

CVE-2025-52953 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2025-52953?

CVE-2025-52953 has a CVSS 3.1 base score of 6.5 (MEDIUM).

CVE-2025-52953

MEDIUM · CVSS 6.5EPSS 0.3%EU EUVD

An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS). Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S11, * from 22.2 before 22.2R3-S7, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2, * from 24.4 before 24.4R1-S3, 24.4R2 Junos OS Evolved: * All versions before 22.2R3-S7-EVO, * from 22.4-EVO before 22.4R3-S7-EVO, * from 23.2-EVO before 23.2R2-S4-EVO, * from 23.4-EVO before 23.4R2-S4-EVO, * from 24.2-EVO before 24.2R2-EVO, * from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.

Key facts

CVSS score: 6.5 (v3.1)
Severity: MEDIUM
CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-440
EPSS score: 0.3% (24th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2025-21156)
Published: July 11, 2025
NVD last modified: June 17, 2026
Status: Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2025-21156 in the EU Vulnerability Database. Last updated in EUVD on July 11, 2025.

View on the EU Vulnerability Database

Affected products

juniper / junos
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and 89 more…

Certified products that may be affected

6 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Juniper SRX Series and vSRX for Junos OS 24.4R1 - Juniper Networks, Inc. - Common Criteria Certificate Number: 2026/163 - active
Junos Space Network Management Platform, with or without Network Director and with or without Security Director in JA2500 - Juniper Networks, Inc. - FIPS 140 3816 - historical
Juniper Networks SRX345/SRX345-DUAL-AC with Junos 15.1X49-D110 - Juniper Networks, Inc. - FIPS 140 3247 - historical
Junos-FIPS 10.4 L2 OS Cryptographic Module - Juniper Networks, Inc. - FIPS 140 1813 - historical
Junos-FIPS 10.4 L1 OS Cryptographic Module - Juniper Networks, Inc. - FIPS 140 1772 - historical

See all 6 in the Security Certifications Explorer.

References

https://supportportal.juniper.net/JSA100059(Vendor Advisory)
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/task/routing-protocol-bgp-security-configuring.html(Technical Description)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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