CVE-2014-125112
Remote code execution via unsigned cookie deserialization in Plack::Middleware::Session::Cookie <= 0.21
Is CVE-2014-125112 being exploited?
Not confirmed. CVE-2014-125112 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.83% probability of exploitation in the next 30 days.
How severe is CVE-2014-125112?
CVE-2014-125112 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2014-125112?
Yes. A fix has been recorded for CVE-2014-125112. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2014-125112 affect?
CVE-2014-125112 affects Plack::Middleware::Session::Cookie <= 0.21 (Perl). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2014-125112?
Upgrade to patched version when available; enable cookie signing.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via deserializing unsigned session cookies; attacker can run arbitrary code on the server.
Patch when possible
- affected<= 0.21
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.