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CVE-2021-36707

30
FAUCET Score

CVE-2021-36707 is a critical command injection vulnerability affecting ProLink PRC2402M V1.0.18 and older firmware. The flaw exists in the set_ledonoff function within the adm.cgi binary, where the led_cmd parameter is directly passed to do_system without proper sanitization. This allows an unauthenticated attacker to execute arbitrary commands on the device. With a CVSS score of 9.8, this vulnerability is considered critical due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. The FAUCET Risk Score of 90/100 further emphasizes its severity. Despite its critical nature, there is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit or ExploitDB. The vulnerability has also garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.18CPE matchmatch criteria
cpe:2.3:o:prolink:prc2402m_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.62%
Probability of exploitation in next 30 days
EPSS Percentile
83.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0262 is in the 74th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ayrx.me / prolink-prc2402m-multiple-vulnerabilities
ExploitThird Party Advisory