Fulcio
Vendor:
First CVE: Dec 4, 2025 · Active for under a year
2
Total CVEs
More Total CVEs than 49% of tracked products
1.0
Avg CVEs / Year
Bottom 1%
6.4
Avg CVSS
Higher Avg CVSS than 27% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Fulcio over time
Volume of CVEsAvg CVSS Base Score
First CVE
Dec 4, 2025
7 months ago
Most Recent CVE
Jan 12, 2026
193 days ago
CVE Severity & Scoring
Fulcio2 CVEs
50%
50%
All CVEs352,231 CVEs
45%
40%
11%
MediumHigh
Attack Vector
Local0 (0.0%)
Network2 (100.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low2 (100.0%)
High0 (0.0%)
Unknown0 (0.0%)
User Interaction
None2 (100.0%)
Unknown0 (0.0%)
Required0 (0.0%)
Privileges Required
Low0 (0.0%)
High0 (0.0%)
None2 (100.0%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (2 CVEs).
2 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2025-66506HIGH Fulcio is a free-to-use certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.3, function identity.extractIssuerURL splits | Dec 4, 2025 | 7.5 | 27 | NO | NO |
CVE-2026-22772MEDIUM Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.5, Fulcio's metaRegex() function uses unanchored regex, | Jan 12, 2026 | 5.3 | 21 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (2 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (2 CVEs).
Media Mentions
Signals from CVEs in this product scope (2 CVEs).
Top CNAs Publishing CVEs For Fulcio
Top CWEs
Versions
No cataloged versions.