How severe is CVE-2017-5336?

CVE-2017-5336 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-5336 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5336?

CVE-2017-5336 primarily affects Gnu Gnutls. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-5336?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-5336 published?

CVE-2017-5336 was published on 2017-03-24 and last updated on 2026-06-17.

CVE-2017-5336

CVE-2017-5336 is a critical-severity vulnerability in Gnu Gnutls with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 7% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Gnu Gnutls
Published: 2017-03-24
Last modified: 2026-06-17

Description

Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via a crafted OpenPGP certificate.

Frequently asked questions

What is CVE-2017-5336?: Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attackers to have unspecified impact via a crafted OpenPGP certificate.
How severe is CVE-2017-5336?: CVE-2017-5336 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-5336 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5336?: CVE-2017-5336 primarily affects Gnu Gnutls. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-5336?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-5336 published?: CVE-2017-5336 was published on 2017-03-24 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.0:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.2:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.3:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.4:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.5:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.6:*:*:*:*:*:*:*
cpe:2.3:a:gnu:gnutls:3.5.7:*:*:*:*:*:*:*

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