OpenConnect before 2.25 does not properly validate X.509 certificates, which allows…
Priority LOW 29CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
OpenConnect before 2.25 does not properly validate X.509 certificates, which allows man-in-the-middle attackers to spoof arbitrary AnyConnect SSL VPN servers via a crafted server certificate that (1) does not correspond to the server hostname or (2) is presented in circumstances involving a missing --cafile configuration option.
Why it matters now
EPSS 0.00598 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:infradead:openconnect:*:*:*:*:*:*:*:* | up to 2.22 | Vulnerable | Infradead |
| cpe:2.3:a:infradead:openconnect:1.00:*:*:*:*:*:*:* | 1.00 | Vulnerable | Infradead |
| cpe:2.3:a:infradead:openconnect:1.10:*:*:*:*:*:*:* | 1.10 | Vulnerable | Infradead |
| cpe:2.3:a:infradead:openconnect:1.20:*:*:*:*:*:*:* | 1.20 | Vulnerable | Infradead |
| cpe:2.3:a:infradead:openconnect:1.30:*:*:*:*:*:*:* | 1.30 | Vulnerable | Infradead |
- cpe:2.3:a:infradead:openconnect:*:*:*:*:*:*:*:* Versions up to 2.22 Vulnerable ·Infradead
- cpe:2.3:a:infradead:openconnect:1.00:*:*:*:*:*:*:* Versions 1.00 Vulnerable ·Infradead
- cpe:2.3:a:infradead:openconnect:1.10:*:*:*:*:*:*:* Versions 1.10 Vulnerable ·Infradead
- cpe:2.3:a:infradead:openconnect:1.20:*:*:*:*:*:*:* Versions 1.20 Vulnerable ·Infradead
- cpe:2.3:a:infradead:openconnect:1.30:*:*:*:*:*:*:* Versions 1.30 Vulnerable ·Infradead
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2010-3901
- 2026-10-03 Alias added: GHSA-92px-2chv-hqhf
References
More Infradead Openconnect vulnerabilities
- TI-2020-10191 OpenConnect 8.09 has a buffer overflow, causing a denial of service (application crash)… CVSS 3.1CRITICAL 9.8
- TI-2019-12221 process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious… CVSS 3.1CRITICAL 9.8
- TI-2013-05832 OpenConnect VPN client with GnuTLS before 5.02 contains a heap overflow if MTU is increased on reconnection. CVSS 3.1CRITICAL 9.8
- TI-2012-02835 Heap-based buffer overflow in OpenConnect 3.18 allows remote servers to cause a denial of… CVSS 2.0HIGH 7.8
- TI-2020-09740 OpenConnect through 8.08 mishandles negative return values from X509_check_ function… CVSS 3.1MEDIUM 5.9
- TI-2012-05090 Multiple stack-based buffer overflows in http.c in OpenConnect before 4.08 allow remote… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2010-3901 · CVE Program
- CVE-2010-3901 · NVD
- FIRST EPSS
- GHSA-92px-2chv-hqhf · GitHub Advisory Database · CC BY 4.0
- CVE-2010-3901 · Red Hat security data · CC BY 4.0
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