What’s Vulnerable › Vulnerabilities
CVE-2026-102082: Junos OS: SRX Series: If TLS session resumption is configured and a specific TLS message is received a PFE crash occurs
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-14 · updated 2026-10-15
- Weakness: CWE-166
Description
An Improper Handling of Missing Special Element vulnerability in the SSL plugin of Juniper Networks Junos OS on SRX Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS). This issue is will occur when 'ssl-proxy' is configured on SRX platforms and during a TLS session-resumption attempt a specifically malformed TLS message is received. This results in an invalid pointer access and PFE crash which causes a temporary loss of traffic forwarding until the PFE automatically recovers. The exact internal timing to trigger this issue is outside the attacker's direct control.This issue affects Junos OS on SRX Series: * All versions before 23.2R2-S5; * 23.4 versions before 23.4R2-S5; * 24.2 versions before 24.2R2-S2; * 24.4 versions before 24.4R2.
Affected products
- Juniper Junos OS: before 23.2R2-S5; from 23.4 before 23.4R2-S5; from 24.2 before 24.2R2-S2; from 24.4 before 24.4R2 — fixed in 23.2R2-S5, 23.4R2-S5, 24.2R2-S2, 24.4R2
How to fix
Upgrade to a fixed version: Juniper Junos OS 23.2R2-S5, 23.4R2-S5, 24.2R2-S2, 24.4R2. Check the vendor advisory for mitigations.
References
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