VYPR
← All advisories
Unrated severityNVD Advisory· Published Jul 11, 2025· Updated Jul 11, 2025

Junos OS and Junos OS Evolved: An unauthenticated adjacent attacker sending a valid BGP UPDATE packet forces a BGP session reset

CVE-2025-52953

Description

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.

Affected products

3
  • Juniper Networks/Junos Os Evolvedllm-fuzzy2 versions
    <22.2R3-S7-EVO; >=22.4-EVO <22.4R3-S7-EVO; >=23.2-EVO <23.2R2-S4-EVO; >=23.4-EVO <23.4R2-S4-EVO; >=24.2-EVO <24.2R2-EVO; >=24.4-EVO <24.4R1-S3-EVO,24.4R2-EVO+ 1 more
    • (no CPE)range: <22.2R3-S7-EVO; >=22.4-EVO <22.4R3-S7-EVO; >=23.2-EVO <23.2R2-S4-EVO; >=23.4-EVO <23.4R2-S4-EVO; >=24.2-EVO <24.2R2-EVO; >=24.4-EVO <24.4R1-S3-EVO,24.4R2-EVO
    • (no CPE)range: 0
  • Juniper Networks/Junosllm-fuzzy
    Range: <21.2R3-S9; >=21.4 <21.4R3-S11; >=22.2 <22.2R3-S7; >=22.4 <22.4R3-S7; >=23.2 <23.2R2-S4; >=23.4 <23.4R2-S4; >=24.2 <24.2R2; >=24.4 <24.4R1-S3,24.4R2

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

2

News mentions

0

No linked articles in our index yet.