CVE-2025-59969

Summary

A Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in the advanced forwarding toolkit (evo-aftmand/evo-pfemand) of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).An attacker sending crafted multicast packets will cause line cards running evo-aftmand/evo-pfemand to crash and restart or non-line card devices to crash and restart. Continued receipt and processing of these packets will sustain the Denial of Service (DoS) condition.

This issue affects Junos OS Evolved PTX Series:

• All versions before 22.4R3-S8-EVO,
• from 23.2 before 23.2R2-S5-EVO,
• from 23.4 before 23.4R2-EVO,
• from 24.2 before 24.2R2-EVO,
• from 24.4 before 24.4R2-EVO.

This issue affects Junos OS Evolved on QFX5000 Series:

• 22.2-EVO version before 22.2R3-S7-EVO,
• 22.4-EVO version before 22.4R3-S7-EVO,
• 23.2-EVO versions before 23.2R2-S4-EVO,
• 23.4-EVO versions before 23.4R2-S5-EVO,
• 24.2-EVO versions before 24.2R2-S1-EVO,
• 24.4-EVO versions before 24.4R1-S3-EVO, 24.4R2-EVO.

This issue does not affect Junos OS Evolved on QFX5000 Series versions before: 21.2R2-S1-EVO, 21.2R3-EVO, 21.3R2-EVO, 21.4R1-EVO, and 22.1R1-EVO.

Affected Software

Weaknesses

• CWE-120: CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://kb.juniper.net/JSA103159

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