CVE-2019-14853: An error-handling flaw was found in python-ecdsa before version 0.13.3

Q: How do I fix CVE-2019-14853?

python-ecdsa: upgrade to 0.13.3. Exact commands for each OS are on this page.

Q: Is CVE-2019-14853 being exploited?

CVE-2019-14853 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-14853 affect?

CVE-2019-14853 affects python-ecdsa. Severity is high (CVSS 7.5). 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.

Q: How urgent is CVE-2019-14853?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2019-14853 is a high-severity flaw (CVSS 7.5) affecting python-ecdsa. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-391, CWE-755
Published	2019-11-26
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: python-ecdsa project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-11-26 13:15 UTCPublished CVE record published
2026-06-17 02:19 UTCUpdated Record last modified

python-ecdsa project python-ecdsa UPGRADE

Affected: < 0.13.3

Fixed in: 0.13.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy python-ecdsa || rpm -q python-ecdsa || python-ecdsa --version

2. UPGRADE to 0.13.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade python-ecdsa

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade python-ecdsa

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-14853?

python-ecdsa: upgrade to 0.13.3. Exact commands for each OS are on this page.

Is CVE-2019-14853 being exploited?

CVE-2019-14853 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-14853 affect?

CVE-2019-14853 affects python-ecdsa. Severity is high (CVSS 7.5). 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 urgent is CVE-2019-14853?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

Software pages

Python vulnerabilities

Related CVEs

CVE-2019-14859 CRITICAL 9.1 UPGRADE DOWNGRADE A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatu

References

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