Vulnerability Details : CVE-2018-6340

The Memcache::getextendedstats function can be used to trigger an out-of-bounds read. Exploiting this issue requires control over memcached server hostnames and/or ports. This affects all supported versions of HHVM (3.30 and 3.27.4 and below).
Published 2018-12-31 22:29:00
Updated 2025-05-06 19:15:54
Source Facebook, Inc.
View at NVD,   CVE.org

Products affected by CVE-2018-6340

Threat overview for CVE-2018-6340

Top countries where our scanners detected CVE-2018-6340
Top open port discovered on systems with this issue 80
IPs affected by CVE-2018-6340 210
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2018-6340!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2018-6340

EPSS FAQ
0.43%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 60 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-6340

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
 NIST
8.1
 HIGH CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.2
5.9
 NIST
8.1
 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.2
5.9
 134c704f-9b21-4f2e-91b3-4a467353bcc0 2025-05-06

CWE ids for CVE-2018-6340

  • The product reads data past the end, or before the beginning, of the intended buffer.
    Assigned by:
    • cve-assign@fb.com (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2018-6340

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