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CVE-2024-21619

25
FAUCET Score

CVE-2024-21619 is a critical vulnerability in Juniper Networks Junos OS on SRX Series and EX Series devices, allowing unauthenticated attackers to access sensitive system configuration information via J-Web. This high-severity flaw (CVSS 7.5) combines missing authentication for a critical function with sensitive information disclosure in error messages. An attacker can guess temporary file names in the /cache folder, revealing device configurations. While not currently listed in CISA KEV or having public exploit code, the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0, < 20.4R3-S9CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
>= 21.2, < 21.2R3-S7CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
>= 21.3, < 21.3R3-S5CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
>= 21.4, < 21.4R3-S6CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
>= 22.1, < 22.1R3-S5CPE match
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 30th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

supportportal.juniper.net / JSA76390
Vendor Advisory