Skip to content
Fencer Intel
high 7.5

CVE-2021-27825 json

A directory traversal vulnerability on Mercury MAC1200R devices allows attackers to read arbitrary files via a web-static/ URL.

published 3y ago modified 4mo ago also EUVD-2021-14564

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
7.8%
EPSS 7.8% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

A directory traversal vulnerability on Mercury MAC1200R devices allows attackers to read arbitrary files via a web-static/ URL.

Is CVE-2021-27825 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Timeline

  1. First public exploit (EDB-51315)
  2. Published

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

7.80% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-51315 MAC 1200R - Directory Traversal webapps, 2023-04-07

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

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

References

Sources

Fencer Intel 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.