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CVE-2021-45043

62
FAUCET Score

CVE-2021-45043 is a directory traversal vulnerability affecting HD-Network Real-time Monitoring System 2.0, allowing an unauthenticated attacker to read arbitrary files, such as /etc/shadow, via the /language/lang s_Language parameter. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a severe risk due to its network-based attack vector and high confidentiality impact. While not currently on CISA's KEV catalog or widely discussed, public exploit code exists, including Nuclei templates and an ExploitDB entry, suggesting a high potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
2.0CPE matchmatch criteria
cpe:2.3:a:hd-network_real-time_monitoring_system_project:hd-network_real-time_monitoring_system:2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
33.13%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-45043 · Dec 14, 2021
ExploitDB: EDB-50588 · Dec 13, 2021
This CVE's current EPSS score of 0.3313 is in the 97th percentile among its peer group of 51,553 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

No media coverage found for this CVE.

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

drive.google.com / file/d/1bx9yCN-IHYuRpd7g3jhMb0LcTC1ARzSX/view
ExploitThird Party Advisory
drive.google.com / file/d/1DlfZz0F8skWy3Mkahx_NMo-sYZh9-eun/view
ExploitThird Party Advisory