How severe is CVE-2019-9623?

CVE-2019-9623 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-2019-9623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9623?

CVE-2019-9623 affects Fengoffice Feng Office. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9623?

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-2019-9623 published?

CVE-2019-9623 was published on 2019-03-07 and last updated on 2026-06-17.

CVE-2019-9623

CVE-2019-9623 is a critical-severity vulnerability in Fengoffice Feng Office 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: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Fengoffice Feng Office
Published: 2019-03-07
Last modified: 2026-06-17

Description

Feng Office 3.7.0.5 allows remote attackers to execute arbitrary code via "<!--#exec cmd=" in a .shtml file to ck_upload_handler.php.

Frequently asked questions

What is CVE-2019-9623?: Feng Office 3.7.0.5 allows remote attackers to execute arbitrary code via "<!--#exec cmd=" in a .shtml file to ck_upload_handler.php.
How severe is CVE-2019-9623?: CVE-2019-9623 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-2019-9623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9623?: CVE-2019-9623 affects Fengoffice Feng Office. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9623?: 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-2019-9623 published?: CVE-2019-9623 was published on 2019-03-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fengoffice:feng_office:3.7.0.5:*:*:*:*:*:*:*

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