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CVE-2019-19033

31
FAUCET Score

CVE-2019-19033 describes a critical backdoor vulnerability in Jalios JCMS 10, allowing unauthenticated attackers to gain full administrative access to the website and WebDAV server. This is achieved by using any username combined with the hardcoded "dev" password. With a CVSS score of 9.8 (CRITICAL), the vulnerability poses a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, and community discussion is minimal, the presence of a hardcoded backdoor warrants immediate attention.

Impacted Technologies

VendorProductVersion(s)CPE
10.0CPE matchmatch criteria
cpe:2.3:a:jalios:jcms:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.35%
Probability of exploitation in next 30 days
EPSS Percentile
87.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0335 is in the 79th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/155419/Jalios-JCMS-10-Backdoor-Account-Authentication-Bypass.html
Third Party AdvisoryVDB Entry
community.jalios.com / jcms/frt_74021/en/blog-jalios-community
Release Notes
github.com / ricardojoserf/CVE-2019-19033
ExploitThird Party Advisory