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Vulnerability record · CVE-2021-31381 · published 19 October 2021

CVE-2021-31381: Juniper session and resource control information exposure vulnerability

Juniper · Session And Resource Control

A configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a specially crafted query to cause the web server to delete files which may allow the attacker to disrupt the integrity and availability of the system.

9.1 CVSS 3.1 Critical EPSS 1.2% · top 34.2% CWE-16 · CWE-16CWE-200 · Information exposure
9.1CVSS 3.1 base score, v2 6.4
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a specially crafted query to cause the web server to delete files which may allow the attacker to disrupt the integrity and availability of the system.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://kb.juniper.net/JSA11248 PatchVendor Advisory
https://kb.juniper.net/JSA11248 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-0960SNMPv3 HMAC verification flaw allows authentication bypassSNMPv3 HMAC verification in multiple products relies on the client to specify the HMAC length, so an attacker can send a length value of 1 and have o…EPSS 69%analysed5.3CVE-2021-31380Juniper session and resource control information exposure vulnerabilityA configuration weakness in the JBoss Application Server (AppSvr) component of Juniper Networks SRC Series allows a remote attacker to send a special…EPSS 1.1%5.3CVE-2021-31352Juniper session and resource control information exposure vulnerabilityAn Information Exposure vulnerability in Juniper Networks SRC Series devices configured for NETCONF over SSH permits the negotiation of weak ciphers,…EPSS 0.83%

Source: NIST National Vulnerability Database (record CVE-2021-31381), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.