NULL pointer dereference in Embedthis Appweb

CVE-2020-15689

Appweb before 7.2.2 and 8.x before 8.1.0, when built with CGI support, mishandles an HTTP request with a Range header that lacks an exact range. This may result in a NULL pointer dereference and cause a denial of service.

EPSS: 0.013 (67.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-15689?
CVE-2020-15689 is a high-severity vulnerability in Embedthis Appweb, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2020-07-13.
How severe is CVE-2020-15689?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-15689 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.