CVE-2025-60011

Junos OS and Junos OS Evolved: Optional transitive BGP attribute is modified before propagation to peers causing sessions to flap

MEDIUM

5.8

CVSS Score

Published: January 15, 2026 at 08:16 PM UTC

Updated: June 17, 2026 at 09:49 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

MEDIUM5.8

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an availability impact for downstream devices. When an affected device receives a specific optional, transitive BGP attribute over an existing BGP session, it will be erroneously modified before propagation to peers. When the attribute is detected as malformed by the peers, these peers will most likely terminate the BGP sessions with the affected devices and thereby cause an availability impact due to the resulting routing churn. This issue affects: Junos OS: * all versions before 22.4R3-S8, * 23.2 versions before 23.2R2-S5 * 23.4 versions before 23.4R2-S6, * 24.2 versions before 24.2R2-S2, * 24.4 versions before 24.4R2; Junos OS Evolved: * all versions before 22.4R3-S8-EVO, * 23.2 versions before 23.2R2-S5-EVO, * 23.4 versions before 23.4R2-S6-EVO, * 24.2 versions before 24.2R2-S2-EVO, * 24.4 versions before 24.4R2-EVO.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

v < 22.4v < 22.4R3-S823.2 ≤ v < 23.2R2-S523.4 ≤ v < 23.4R2-S624.2 ≤ v < 24.2R2-S224.4 ≤ v < 24.4R222.4 22.4 r1 22.4 r1-s1 22.4 r1-s2 22.4 r2 22.4 r2-s1 22.4 r2-s2 22.4 r3 22.4 r3-s1 22.4 r3-s2 22.4 r3-s3 22.4 r3-s4 22.4 r3-s5 22.4 r3-s6 22.4 r3-s7 23.2 23.2 r1 23.2 r1-s1 23.2 r1-s2 23.2 r2 23.2 r2-s1 23.2 r2-s2 23.2 r2-s3 23.2 r2-s4 23.4 23.4 r1 23.4 r1-s1 23.4 r1-s2 23.4 r2 23.4 r2-s1 23.4 r2-s2 23.4 r2-s3 23.4 r2-s4 23.4 r2-s5 24.2 24.2 r1 24.2 r1-s1 24.2 r1-s2 24.2 r2 24.2 r2-s1 24.4 24.4 r1 24.4 r1-s2 24.4 r1-s3

Affected range stops below 22.4R3-S8, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R2-S6, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.2R2-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.4R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

v < 22.4R3-S8-EVO23.2 ≤ v < 23.2R2-S5-EVO23.4 ≤ v < 23.4R2-S6-EVO24.2 ≤ v < 24.2R2-S2-EVO24.4 ≤ v < 24.4R2-EVO23.2 23.4 24.2 24.4

Affected range stops below 22.4R3-S8-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2-S5-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R2-S6-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.2R2-S2-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.4R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory

Source: cverecord

https://supportportal.juniper.net/

Vendor Advisory

Source: cverecord

https://kb.juniper.net/JSA103161

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.8MEDIUMjuniper

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: CHANGED
Confidentiality: NONE
Integrity: NONE
Availability: LOW

Vector?

Quick Info

StatusANALYZED

CWE

CWE-754

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