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CVE-2020-12842

24
FAUCET Score

CVE-2020-12842 describes a critical privilege escalation vulnerability affecting ismartgate PRO firmware versions up to 1.5.9. An attacker can append malicious PHP code to the /cron/checkUserExpirationDate.php file, leading to unauthorized access and control. This vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no public exploit intelligence (Metasploit, Nuclei, ExploitDB) or active exploitation has been observed, and community discussion is minimal, the high FAUCET Risk Score of 78/100 indicates its significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
1.5.9CPE matchmatch criteria
cpe:2.3:o:gogogate:ismartgate_pro_firmware:1.5.9:*:*:*:*:*:*:*

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
1.55%
Probability of exploitation in next 30 days
EPSS Percentile
72.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0155 is in the 60th percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

ismartgate.com / secure-garage-door
ProductVendor Advisory
kth.diva-portal.org / smash/get/diva2:1464458/FULLTEXT01.pdf
ExploitThird Party Advisory