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CVE-2021-44981

23
FAUCET Score

CVE-2021-44981 is a critical remote code execution (RCE) vulnerability affecting QuickBox Pro versions 2.5.8 and below. It stems from improper sanitization of a GET parameter in the config.php file, allowing attackers to inject and execute arbitrary shell commands. This vulnerability carries a high CVSS score of 8.8, indicating a low attack complexity and the potential for complete compromise of confidentiality, integrity, and availability, including privilege escalation due to the media server running as root. While no public exploits or active exploitation have been observed, and community discussion is minimal, the inherent risk remains significant.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.8CPE matchmatch criteria
cpe:2.3:a:quickbox:quickbox:*:*:*:*:community:*:*:*
<= 2.5.8CPE matchmatch criteria
cpe:2.3:a:quickbox:quickbox:*:*:*:*:pro:*:*:*

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
3.67%
Probability of exploitation in next 30 days
EPSS Percentile
88.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0367 is in the 88th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 / QuickBox/QB/issues/202
Issue TrackingThird Party Advisory
websec.nl / blog/61b2b37a43a1155c848f3b08/websec%20finds%20critical%20vulnerabilities%20in%20popular%20media%20server
ExploitThird Party Advisory