How severe is CVE-2017-20230?

CVE-2017-20230 has a CVSS 3.x base score of 10.0, 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-2017-20230 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-20230?

CVE-2017-20230 affects Nwclark Storable. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-20230?

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.

Does CVE-2017-20230 have an EU (EUVD) identifier?

Yes. CVE-2017-20230 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18967.

When was CVE-2017-20230 published?

CVE-2017-20230 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2017-20230

CVE-2017-20230 is a critical-severity vulnerability in Nwclark Storable with a CVSS 3.x base score of 10.0. 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-121.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2017-18967
Weakness: CWE-121
Affected product: Nwclark Storable
Published: 2026-04-21
Last modified: 2026-06-17

Description

Storable versions before 3.05 for Perl has a stack overflow. The retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.

Frequently asked questions

What is CVE-2017-20230?: Storable versions before 3.05 for Perl has a stack overflow. The retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.
How severe is CVE-2017-20230?: CVE-2017-20230 has a CVSS 3.x base score of 10.0, 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-2017-20230 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-20230?: CVE-2017-20230 affects Nwclark Storable. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-20230?: 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.
Does CVE-2017-20230 have an EU (EUVD) identifier?: Yes. CVE-2017-20230 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2017-18967.
When was CVE-2017-20230 published?: CVE-2017-20230 was published on 2026-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nwclark:storable:*:*:*:*:*:perl:*:*

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