NULL pointer dereference in Embedthis Appweb

CVE-2018-15504

An issue was discovered in Embedthis GoAhead before 4.0.1 and Appweb before 7.0.2. The server mishandles some HTTP request fields associated with time, which results in a NULL pointer dereference, as demonstrated by If-Modified-Since or If…

EPSS: 0.028 (84.4th 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-2018-15504?
CVE-2018-15504 is a high-severity vulnerability in Embedthis Appweb, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2018-08-18.
How severe is CVE-2018-15504?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-15504 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.