CVE-2012-6128: n/a vulnerability

CVE-2012-6128: Multiple stack-based buffer overflows in http.c in OpenConnect before 4.08 allow remote VPN gateways to cau...

Multiple stack-based buffer overflows in http.c in OpenConnect before 4.08 allow remote VPN gateways to cause a denial of service (application crash) via a long (1) hostname, (2) path, or (3) cookie list in a response.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 21:28 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2012-6128 affects OpenConnect VPN clients before 4.08. A malicious or compromised VPN gateway could send unusually long response fields and crash the client. The sourced impact is denial of service, not confirmed code execution. Business urgency is mainly around legacy VPN endpoints and users connecting to untrusted gateways. Exposure is likely limited to systems running OpenConnect client versions before 4.08. Risk is higher where users connect to third-party, untrusted, or potentially compromised VPN gateways. Modern distributions are likely patched, but legacy images, appliances, and unmanaged laptops may still carry old packages. Treat this as a legacy VPN hygiene issue with moderate urgency. It can disrupt user connectivity if exposed, but the provided evidence does not show active exploitation or impact beyond client crash. Prioritize patching unmanaged endpoints and old base images. Mitigation focus: Upgrade OpenConnect to 4.08 or a vendor-patched package.; Apply relevant Debian, Mandriva, openSUSE, or Mageia security updates where applicable.; Restrict VPN clients to trusted, managed gateway profiles..

Prepared: Jun 24, 2026, 11:46 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 24, 2013, 19:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
openconnect-vpngateway-bo(82058)CVE reference · vdb-entry, x_refsource_XF
https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0060CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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