Double free vulnerability in OpenConnect before 1.40 might allow remote AnyConnect SSL…
Priority LOW 25CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
Double free vulnerability in OpenConnect before 1.40 might allow remote AnyConnect SSL VPN servers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted DTLS Cipher option during a reconnect operation.
Why it matters now
EPSS 0.0098 62nd 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:infradead:openconnect:*:*:*:*:*:*:*:* | up to 1.30 | 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:*:*:*:*:*:*:*:* Versions up to 1.30 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2009-5009
- 2026-10-03 Alias added: GHSA-ggcw-fq74-j5hg
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-2010-03706 OpenConnect before 2.25 does not properly validate X.509 certificates, which allows… CVSS 2.0MEDIUM 6.4
Sources
- CVE-2009-5009 · CVE Program
- CVE-2009-5009 · NVD
- FIRST EPSS
- GHSA-ggcw-fq74-j5hg · GitHub Advisory Database · CC BY 4.0
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