How severe is CVE-2019-14853?

CVE-2019-14853 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 none, integrity none, and availability high.

Is CVE-2019-14853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-14853?

CVE-2019-14853 affects Python-ecdsa Project Python-ecdsa. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-14853?

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-2019-14853 published?

CVE-2019-14853 was published on 2019-11-26 and last updated on 2026-06-17.

CVE-2019-14853

CVE-2019-14853 is a high-severity vulnerability in Python-ecdsa Project Python-ecdsa 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-755.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Python-ecdsa Project Python-ecdsa
Published: 2019-11-26
Last modified: 2026-06-17

Description

An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.

Frequently asked questions

What is CVE-2019-14853?: An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.
How severe is CVE-2019-14853?: CVE-2019-14853 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 none, integrity none, and availability high.
Is CVE-2019-14853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-14853?: CVE-2019-14853 affects Python-ecdsa Project Python-ecdsa. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-14853?: 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-2019-14853 published?: CVE-2019-14853 was published on 2019-11-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:*

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