How severe is CVE-2020-17478?

CVE-2020-17478 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-17478 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-17478?

CVE-2020-17478 affects P5-crypt-perl Project P5-crypt-perl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-17478?

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

When was CVE-2020-17478 published?

CVE-2020-17478 was published on 2020-08-10 and last updated on 2026-06-17.

CVE-2020-17478

CVE-2020-17478 is a high-severity vulnerability in P5-crypt-perl Project P5-crypt-perl with a CVSS 3.x base score of 7.5. 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-203.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: P5-crypt-perl Project P5-crypt-perl
Published: 2020-08-10
Last modified: 2026-06-17

Description

ECDSA/EC/Point.pm in Crypt::Perl before 0.33 does not properly consider timing attacks against the EC point multiplication algorithm.

Frequently asked questions

What is CVE-2020-17478?: ECDSA/EC/Point.pm in Crypt::Perl before 0.33 does not properly consider timing attacks against the EC point multiplication algorithm.
How severe is CVE-2020-17478?: CVE-2020-17478 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-17478 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-17478?: CVE-2020-17478 affects P5-crypt-perl Project P5-crypt-perl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-17478?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-17478 published?: CVE-2020-17478 was published on 2020-08-10 and last updated on 2026-06-17.

References

https://github.com/FGasper/p5-Crypt-Perl/compare/0.32...0.33

Affected products (1)

cpe:2.3:a:p5-crypt-perl_project:p5-crypt-perl:*:*:*:*:*:perl:*:*

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