CVE Catalog

CVE-2026-102084

HighCVSS 8.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.51%

42th percentile - higher than 42% of all known CVEs

Summary

An Improper Validation of Syntactic Correctness of Input vulnerability in the VPN daemon of Juniper Networks Junos OS on SRX Series allows an authenticated, network-based attacker to take complete control of the device. If an SRX device configured for AutoDiscovery VPN (ADVPN) receives a message from a peer that contains one or more specifically malformed attributes, this will cause a buffer overflow, which can allow remote code execution and therefore allow an attacker to take complete control of the device.

Risk Assessment

An attacker can take complete control of the device; however, the attack requires acquiring the shared secret to impersonate a peer or compromising an existing one, making it considerably difficult.

Recommendation

Upgrade Junos OS on SRX Series to patched versions (e.g., 23.2R2-S7.7, 23.4R2-S7, 24.2R2-S4, 24.4R2-S3, 25.2R2, 25.4R1-S3 or later); protect ADVPN shared secrets.

Other vulnerabilities in Junos OS

See all
Original NVD description (English source)

An Improper Validation of Syntactic Correctness of Input vulnerability in the VPN daemon of Juniper Networks Junos OS on SRX Series allows an authenticated, network-based attacker to take complete control of the device. If an SRX device configured for AutoDiscovery VPN (ADVPN) receives a message from a peer that contains one or more specifically malformed attributes, this will cause a buffer overflow, which can allow remote code execution and therefore allow an attacker to take complete control of the device. To be able to carry out this attack an attacker must either have acquired the shared secret to impersonate a peer or have compromised an existing one, so this attack is considerably difficult. This issue affects Junos OS on SRX Series: * All versions before 23.2R2-S7.7; * from 23.4 before 23.4R2-S7; * from 24.2 before 24.2R2-S4; * from 24.4 before 24.4R2-S3; * from 25.2 before 25.2R2; * from 25.4 before 25.4R1-S3.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS