How severe is CVE-2020-12843?

CVE-2020-12843 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-12843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12843?

CVE-2020-12843 affects Gogogate Ismartgate Pro Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-12843?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-12843 published?

CVE-2020-12843 was published on 2020-09-24 and last updated on 2026-06-17.

CVE-2020-12843

CVE-2020-12843 is a critical-severity vulnerability in Gogogate Ismartgate Pro Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Gogogate Ismartgate Pro Firmware
Published: 2020-09-24
Last modified: 2026-06-17

Description

ismartgate PRO 1.5.9 is vulnerable to malicious file uploads via the form for uploading sounds to garage doors. The magic bytes for WAV must be used.

Frequently asked questions

What is CVE-2020-12843?: ismartgate PRO 1.5.9 is vulnerable to malicious file uploads via the form for uploading sounds to garage doors. The magic bytes for WAV must be used.
How severe is CVE-2020-12843?: CVE-2020-12843 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-12843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12843?: CVE-2020-12843 affects Gogogate Ismartgate Pro Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-12843?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-12843 published?: CVE-2020-12843 was published on 2020-09-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:gogogate:ismartgate_pro_firmware:1.5.9:*:*:*:*:*:*:*

More vulnerabilities in Gogogate Ismartgate Pro Firmware

CVE-2020-12842 — Critical (CVSS 9.8): ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/checkUserExpirationDate.php.
CVE-2020-12839 — Critical (CVSS 9.8): ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/checkExpirationDate.php.
CVE-2020-12838 — Critical (CVSS 9.8): ismartgate PRO 1.5.9 is vulnerable to privilege escalation by appending PHP code to /cron/mailAdmin.php.
CVE-2020-12282 — High (CVSS 8.8): iSmartgate PRO 1.5.9 is vulnerable to CSRF via the busca parameter in the form used for searching for users, accessible…
CVE-2020-13119 — High (CVSS 8.1): ismartgate PRO 1.5.9 is vulnerable to clickjacking.
CVE-2020-12837 — High (CVSS 7.5): ismartgate PRO 1.5.9 is vulnerable to malicious file uploads via the form for uploading images to garage doors. The…

All CVEs affecting Gogogate Ismartgate Pro Firmware →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →