CVE-2019-14853: python-ecdsa_project python-ecdsa DEPRECATED: Unchecked Error Condition
Vulnerability summary
CVE-2019-14853 is a high (CVSS 7.5) DEPRECATED: Unchecked Error Condition vulnerability in python-ecdsa_project python-ecdsa. EPSS estimates a 2.41% chance of exploitation in the next 30 days, higher than 84% of scored vulnerabilities.
Not severe (CVSS 3.7, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 9Timeline
- 26-11-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
10 scores · 6 sources · 4 versions- OSV · PypiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST3.7LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · UbuntuEcosystem advisory · calculated3.7LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
2.41%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.41% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-391DEPRECATED: Unchecked Error ConditionThis entry has been deprecated because it used ambiguous terminology and incorporated and confused multiple weaknesses. See Mapping Notes for other recommendations, and see Maintenance Notes for more detailed explanations.
- CWE-755Improper Handling of Exceptional ConditionsThe product does not handle or incorrectly handles an exceptional condition.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
[unknown]1 product
- python-ecdsa0.13.3
Alpine1 product
- py3-ecdsa< 0.13.3-r0
Debian1 product
- python-ecdsa< 0.13.3-1
PyPI1 product
- ecdsa< 0.13.3
Python-ecdsa_project1 product
- python-ecdsa< 0.13.3
Ubuntu1 product
- python-ecdsa< 0.13-2ubuntu0.16.04.1 | < 0.13-2ubuntu0.18.04.1
6 vendors · 6 products
References
17 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853X Refsource CONFIRMIssue TrackingThird Party AdvisoryWEBREPORT
