README.md

metadata

language:
  - fr
license: cc-by-4.0
tags:
  - vulnerability
  - cybersecurity
  - cert-fr
  - severity-classification
size_categories:
  - 10K<n<100K

Vulnerability-CERT-FR

Security bulletins in French published by CERT-FR (alerts and advisories, including the earlier CERTA bulletins), extracted via Vulnerability-Lookup and labelled with the CVSS scores of the CVEs they reference.

Dataset structure

Field	Type	Description
id	string	CERT-FR reference (e.g., CERTFR-2026-AVI-1359)
title	string	Bulletin title in French
description	string	Bulletin summary in French, with HTML and Markdown markup removed
risks	list of strings	Risks listed by CERT-FR (e.g., "Exécution de code arbitraire à distance")
published	string	Initial release date of the bulletin
cve_ids	list of strings	CVEs referenced by the bulletin
cvss_scores	list of floats	CVSS base score of each CVE in cve_ids (null if the CVE has no score)
cvss_versions	list of strings	CVSS version of each score in cvss_scores (e.g., cvss_v3_1)
cvss_max	float	Highest score in cvss_scores
cvss_mean	float	Mean of the available scores in cvss_scores
v2_only	bool	True when all available scores are CVSS v2.0
source	string	certfr_alerte or certfr_avis

Labelling

CERT-FR bulletins do not carry a severity rating. Each bulletin is scored from the CVEs it references:

• The score of a CVE is taken from its CNA record, or from NVD when the CNA provides none. When several CVSS versions are available, v3.1 is preferred, then v3.0, v4.0 and v2.0.
• cvss_max is the recommended label: bulletin summaries and risks describe the most severe impact among the referenced vulnerabilities, which the mean tends to dilute.

Only bulletins referencing between 1 and 10 CVEs, with a score for at least 80% of them, and with a non-empty summary are kept. Larger bulletins are usually vendor patch roll-ups whose maximum score says little about the text.

Severity distribution

Using cvss_max and the CVSS v3 thresholds (Low < 4.0 ≤ Medium < 7.0 ≤ High < 9.0 ≤ Critical):

Severity	All bulletins	Excluding v2_only
Low	205 (2.0%)	79 (1.2%)
Medium	2,702 (25.9%)	1,321 (19.5%)
High	4,549 (43.6%)	3,620 (53.4%)
Critical	2,979 (28.5%)	1,760 (26.0%)
Total	10,435	6,780

Alerts (certfr_alerte) account for 258 bulletins, advisories (certfr_avis) for the rest.

CVSS v2

Bulletins published before 2016 mostly reference CVEs scored only with CVSS v2.0 (v2_only), which has no Critical rating. Applying CVSS v3 thresholds to them overestimates the share of Critical labels. Depending on the use case, either filter them out or map their scores with the CVSS v2 thresholds (Low < 4.0 ≤ Medium < 7.0 ≤ High).