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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://supportportal.juniper.net/JSA112173 |
|
History
Sat, 17 Oct 2026 01:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Juniper Networks
Juniper Networks junos Os |
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| Vendors & Products |
Juniper Networks
Juniper Networks junos Os |
Thu, 15 Oct 2026 05:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 14 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Junos OS: SRX Series: In an ADVPN scenario a malformed message from a peer causes Remote Code Execution | |
| Weaknesses | CWE-1286 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: juniper
Published: 2026-10-14T16:24:40.299Z
Updated: 2026-10-15T03:57:23.677Z
Reserved: 2026-09-28T17:37:38.548Z
Link: CVE-2026-102084
Updated: 2026-10-14T20:39:28.662Z
Status : Awaiting Analysis
Published: 2026-10-14T17:18:04.310
Modified: 2026-10-15T16:24:19.073
Link: CVE-2026-102084
No data.