Stack-based Buffer Overflow in Juniper Networks Junos OS and Junos OS Evolved
CVE-2026-101979

8.7HIGH

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Junos Os Evolved
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists

What is CVE-2026-101979?

A stack-based buffer overflow vulnerability exists in Juniper Networks' Junos OS and Junos OS Evolved. This security flaw enables a network attacker with SNMP read access to execute arbitrary code with root privileges or trigger a denial of service. The vulnerability is exploited through carefully crafted SNMP packets, particularly when SNMP and AAA services are enabled. Organizations using vulnerable versions are urged to apply patches to safeguard their network infrastructure.

Affected Version(s)

Junos OS 0 < 23.2R2-S7.7

Junos OS 23.4 < 23.4R2-S8.13

Junos OS 24.2 < 24.2R2-S5.5

References

https://supportportal.juniper.net/JSA112187
vendor-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.