Unspecified vulnerability in OpenConnect before 2.23 allows remote AnyConnect SSL VPN servers to cause a denial of service (application crash) via a 404 HTTP status code.
Conclusion & alert: CVE-2010-3903 is rated Moderate Risk (40.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.98%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.30% | 0.98% | +0.67% |
| 2 | 2025-03-30 | 0.36% | 0.30% | -0.06% |
| 3 | 2025-03-29 | — | 0.36% | — |
Full EPSS history (9 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2010-3903 not yet assigned priority: Debian including 1 source packages (openconnect), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2010-3903 |
ubuntu
|
low | CVE-2010-3903 low priority: Ubuntu including 1 source packages (openconnect), 13 status rows across 13 suites (dapper, hardy, jaunty, karmic, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): not-affected 6, DNE 3, ignored 3, released 1. | https://ubuntu.com/security/CVE-2010-3903 |
: Per reference link: "OpenConnect is not officially supported by, or associated in any way with, Cisco Systems"
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| infradead | openconnect | <= 2.22 | cpe:2.3:a:infradead:openconnect:*:*:*:*:*:*:*:* |
| infradead | openconnect | 1.00 | cpe:2.3:a:infradead:openconnect:1.00:*:*:*:*:*:*:* |
| infradead | openconnect | 1.10 | cpe:2.3:a:infradead:openconnect:1.10:*:*:*:*:*:*:* |
| infradead | openconnect | 1.20 | cpe:2.3:a:infradead:openconnect:1.20:*:*:*:*:*:*:* |
| infradead | openconnect | 1.30 | cpe:2.3:a:infradead:openconnect:1.30:*:*:*:*:*:*:* |
| infradead | openconnect | 1.40 | cpe:2.3:a:infradead:openconnect:1.40:*:*:*:*:*:*:* |
| infradead | openconnect | 2.00 | cpe:2.3:a:infradead:openconnect:2.00:*:*:*:*:*:*:* |
| infradead | openconnect | 2.01 | cpe:2.3:a:infradead:openconnect:2.01:*:*:*:*:*:*:* |
| infradead | openconnect | 2.10 | cpe:2.3:a:infradead:openconnect:2.10:*:*:*:*:*:*:* |
| infradead | openconnect | 2.11 | cpe:2.3:a:infradead:openconnect:2.11:*:*:*:*:*:*:* |
| infradead | openconnect | 2.12 | cpe:2.3:a:infradead:openconnect:2.12:*:*:*:*:*:*:* |
| infradead | openconnect | 2.20 | cpe:2.3:a:infradead:openconnect:2.20:*:*:*:*:*:*:* |
| infradead | openconnect | 2.21 | cpe:2.3:a:infradead:openconnect:2.21:*:*:*:*:*:*:* |