CVE-2016-9953: haxx curl Out-of-bounds Read
Vulnerability summary
CVE-2016-9953 is a critical (CVSS 9.8) Out-of-bounds Read vulnerability in haxx curl. EPSS estimates a 1.80% chance of exploitation in the next 30 days, higher than 78% of scored vulnerabilities.
Timeline
- 12-03-2018PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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), or possibly have unspecified other impact via a wildcard certificate name, which triggers an out-of-bounds read.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.80%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
0.00 pp
From 1.80% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- curl≥ 7.30.0, < 7.52.1-r0
Haxx1 product
- curl≥ 7.30.0, ≤ 7.51.0
2 vendors · 2 products