CVE-2011-4092: obby (aka libobby) does not verify SSL server certificates, which allows remote attackers to spoof servers via

This month

MEDIUM 5.8WATCHLISTMITIGATE

CVE-2011-4092 is a medium-severity flaw (CVSS 5.8) affecting obby. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

obby (aka libobby) does not verify SSL server certificates, which allows remote attackers to spoof servers via an arbitrary certificate.

Why this priority

Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.8 (Medium)
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-20
Published	2014-02-10
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: ubuntu developers

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-02-10 18:15 UTCPublished CVE record published
2026-06-16 23:34 UTCUpdated Record last modified

ubuntu developers obby MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy obby || rpm -q obby || obby --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2011-4092?

obby: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-4092 being exploited?

CVE-2011-4092 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2011-4092 affect?

CVE-2011-4092 affects obby. Severity is medium (CVSS 5.8). obby (aka libobby) does not verify SSL server certificates, which allows remote attackers to spoof servers via an arbitrary certificate.

How urgent is CVE-2011-4092?

Priority 45/100. Public exploit reference; On your watchlist

Software pages

Ubuntu vulnerabilities

References

← Back to latest CVEs