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Vulnerability details: VCID-fnr7-xb26-dbez
Vulnerability ID VCID-fnr7-xb26-dbez
Aliases CVE-2020-19909
Summary Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error.
Status Disputed
Exploitability 0.5
Weighted Severity 1.6
Risk 0.8
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
epss 0.00017 https://api.first.org/data/v1/epss?cve=CVE-2020-19909
ssvc Track https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves/
cvssv3.1 3.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
ssvc Track https://github.com/curl/curl/pull/4166
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2020-19909
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-19909
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
4166 https://github.com/curl/curl/pull/4166
cve-2020-19909-is-everything-that-is-wrong-with-cves https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves/
No exploits are available.
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-07-08T18:11:17Z/ Found at https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves/
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-07-08T18:11:17Z/ Found at https://github.com/curl/curl/pull/4166
Exploit Prediction Scoring System (EPSS)
Percentile 0.04228
EPSS Score 0.00017
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-03T19:05:22.476158+00:00 NVD CVE Status Improver Improve https://cveawg.mitre.org/api/cve/CVE-2020-19909 38.1.0
2026-04-01T16:34:11.649369+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0