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CVE-2014-3662

CVE-2014-3662 is a Information Exposure vulnerability in jenkins jenkins. O3 Security detects and blocks CVE-2014-3662 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

Jenkins before 1.583 and LTS before 1.565.3 allows remote attackers to enumerate user names via vectors related to login attempts.

Published
Oct 16, 2014
Updated
Jun 17, 2026
Affected
2 products
Patched
See advisory
Exploits
None indexed
Exploitation data as of Jun 17, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Description

Jenkins before 1.583 and LTS before 1.565.3 allows remote attackers to enumerate user names via vectors related to login attempts.

Affected Products

2 products · 3 configurations
Application
jenkinsjenkins
≤ 1.565.2
range
Application
openshiftredhat
≤ 3.1
range

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every jenkins jenkins deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Remediation status

    No patch has shipped for CVE-2014-3662 yet — track the jenkins jenkins advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2014-3662 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2014-3662. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Jenkins before 1.583 and LTS before 1.565.3 allows remote attackers to enumerate user names via vectors related to login attempts.
O3 Security · Runtime Protection

Is CVE-2014-3662 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2014-3662 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

CVE-2014-3662: Jenkins Information Exposure | O3 Security