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Fencer Vulns
high 7.5

CVE-2021-45043 in the critical feed json

HD-Network Real-time Monitoring System 2.0 allows ../ directory traversal to read /etc/shadow via the /language/lang s_Language parameter.

published 2021-12-15 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31840

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
33.1%
EPSS 33.1% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

HD-Network Real-time Monitoring System 2.0 allows ../ directory traversal to read /etc/shadow via the /language/lang s_Language parameter.

Timeline

  1. First public exploit (EDB-50588)
  2. Published

Exploit prediction

33.13% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-50588 HD-Network Real-time Monitoring System 2.0 - Local File Inclusion (LFI) remote, 2021-12-13
  • Nuclei template HD-Network Realtime Monitoring System 2.0 - Local File Inclusion nuclei detection template
  • drive.google.com https://drive.google.com/file/d/1DlfZz0F8skWy3Mkahx_NMo-sYZh9-eun/view?usp=sharing referenced PoC, tagged "exploit" by a source, unverified
  • drive.google.com https://drive.google.com/file/d/1bx9yCN-IHYuRpd7g3jhMb0LcTC1ARzSX/view?usp=sharing referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.