CVE-2020-12839
ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron...
ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/checkExpirationDate.php.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/checkExpirationDate.php.
- Record
CVE-2020-12839- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-732
- Updated
- 2026-11-02
CVE List No score
ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/checkExpirationDate.php.
- Record
CVE-2020-12839- Updated
- 2026-11-02
EUVDEUVD-2020-5121 No score
ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/checkExpirationDate.php.
- Record
EUVD-2020-5121- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-h8fx-4qrr-fwv4 No score
ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron...
ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/checkExpirationDate.php.
- Record
GHSA-h8fx-4qrr-fwv4- Weakness
- CWE-94
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-12839 is a critical vulnerability (CVSS 9.8) in Gogogate Ismartgate Pro Firmware, published September 24, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.55%, the 75th percentile. No source names a fixed version.