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CVE-2021-29005

30
FAUCET Score

CVE-2021-29005 describes an insecure permission vulnerability in rConfig server version 3.9.6, where the Apache user can execute the chmod command as root without a password. This flaw allows a low-privileged attacker to potentially gain root access on the server. With a CVSS score of 8.8 (High), the vulnerability is easily exploitable over the network with low privileges and no user interaction, leading to high impacts on confidentiality, integrity, and availability. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the FAUCET Risk Score of 67/100 indicates a notable risk.

Impacted Technologies

VendorProductVersion(s)CPE
3.9.6CPE matchmatch criteria
cpe:2.3:a:rconfig:rconfig:3.9.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.07%
Probability of exploitation in next 30 days
EPSS Percentile
79.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0207 is in the 78th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

github.com / mrojz/rconfig-exploit/blob/main/CVE-2021-29005-POC.sh
ExploitThird Party Advisory