Is CVE-2016-7438 in the CISA KEV catalog?

No. CVE-2016-7438 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-7438?

CVE-2016-7438 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2016-7438?

CVE-2016-7438 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-7438?

Upgrade wolfssl on debian 11 to 3.9.10+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2016-7438

MEDIUM

5.5

CVSS v3

NVD

Description

The C software implementation of ECC in wolfSSL (formerly CyaSSL) before 3.9.10 makes it easier for local users to discover RSA keys by leveraging cache-bank hit differences.

CWE-310Cryptographic Issues

How to fix

Remediation Available

wolfsslDebian

Fixed in:3.9.10+dfsg-1CVE-2016-7438

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Vendor Advisory1

wolfssl.com

Other references1

securityfocus.com

Related Vulnerabilities

Other CWE-310 (Cryptographic Issues) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-3566	Low	3.4	100%	-	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2015-0204	Medium	4.3	99%	-	Fix
CVE-2016-2107	Medium	5.9	89%	-	Fix
CVE-2016-0800	Medium	5.9	82%	-	Fix
CVE-2014-8684	Critical	9.8	72%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.