CVE-2019-14859

What it is

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering.

Exploit odds

1.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2020-01-02 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:19 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.5% in the next 30 days (EPSS).
• Severity: 9.1 CRITICAL (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2020-01-02 15:15 UTC

Last modified

2026-06-17 02:19 UTC

Exploit probability

1.5% · EPSS, next 30 days

Weakness

CWE-347

Record status

Modified

Affected

• python-ecdsa Project python-ecdsa < 0.13.3
• Redhat Ceph Storage 2.0
• Redhat Ceph Storage 3.0
• Redhat Openstack 10
• Redhat Openstack 13
• Redhat Openstack 14
• Redhat Openstack 15
• Redhat Virtualization 4.0

Attack profile CVSS 3.1 · 9.1

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

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