CVE-2025-30658
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
09/04/2025
Last modified:
11/04/2025
Description
A Missing Release of Memory after Effective Lifetime vulnerability in the Anti-Virus processing of Juniper Networks Junos OS on SRX Series <br />
<br />
allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).<br />
<br />
On all SRX platforms with Anti-Virus enabled, if a server sends specific content in the HTTP body of a response to a client request, these packets are queued by Anti-Virus processing in Juniper Buffers (jbufs) which are never released. When these jbufs are exhausted, the device stops forwarding all transit traffic.<br />
<br />
A jbuf memory leak can be noticed from the following logs:<br />
<br />
(.) Warning: jbuf pool id utilization level (%) is above %!<br />
<br />
To recover from this issue, the affected device needs to be manually rebooted to free the leaked jbufs.<br />
<br />
<br />
<br />
<br />
This issue affects Junos OS on SRX Series: <br />
<br />
* all versions before 21.2R3-S9,<br />
* 21.4 versions before 21.4R3-S10,<br />
* 22.2 versions before 22.2R3-S6,<br />
* 22.4 versions before 22.4R3-S6,<br />
* 23.2 versions before 23.2R2-S3,<br />
* 23.4 versions before 23.4R2-S3,<br />
* 24.2 versions before 24.2R2.
Impact
Base Score 4.0
8.70
Severity 4.0
HIGH
Base Score 3.x
7.50
Severity 3.x
HIGH