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CVE-2021-36705

29
FAUCET Score

CVE-2021-36705 is a critical command injection vulnerability affecting ProLink PRC2402M V1.0.18 and older firmware versions. An unauthenticated attacker can exploit a flaw in the set_TR069 function within the adm.cgi binary by manipulating the TR069_local_port parameter, leading to arbitrary command execution. With a CVSS score of 9.8, this vulnerability allows for complete compromise of confidentiality, integrity, and availability of the affected device, requiring no user interaction or complex attack conditions. Despite its severity, there is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant 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 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0262 is in the 74th percentile among its peer group of 36,833 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