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CVE-2021-31380

20
FAUCET Score

CVE-2021-31380 is a configuration weakness in the JBoss Application Server component of Juniper Networks SRC Series, allowing a remote attacker to obtain sensitive information through specially crafted queries. Rated Medium (CVSS 5.3), this vulnerability is easily exploitable over the network with no user interaction, leading to sensitive information disclosure. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.12.0r5CPE matchmatch criteria
cpe:2.3:a:juniper:session_and_resource_control:*:*:*:*:*:*:*:*
>= 4.13.0r1, < 4.13.0r3CPE matchmatch criteria
cpe:2.3:a:juniper:session_and_resource_control:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.10%
Probability of exploitation in next 30 days
EPSS Percentile
62.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0110 is in the 40th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

juniperpatch availablevia nvd_reference
View patch

References

kb.juniper.net / JSA11248
PatchVendor Advisory