What is CVE-2016-9953?

CVE-2016-9953 is a critical-severity vulnerability in Haxx Curl, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2018-03-12.

How severe is CVE-2016-9953?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2016-9953 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Haxx Curl

CVE-2016-9953

The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, allows remote attackers to obtain sensitive information, cause a denial of service (crash)…

Vulnerability class: Buffer Overflow

EPSS: 0.018 (76.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2016-9953?: CVE-2016-9953 is a critical-severity vulnerability in Haxx Curl, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2018-03-12.
How severe is CVE-2016-9953?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2016-9953 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.