CVE & CISA-KEV Catalog

CVE-2015-7225

MEDIUMEPSS 76th pctl
5.3
CVSS v3
NVD

Description

Tinfoil Devise-two-factor before 2.0.0 does not strictly follow section 5.2 of RFC 6238 and does not "burn" a successfully validated one-time password (aka OTP), which allows remote or physically proximate attackers with a target user's login credentials to log in as said user by obtaining the OTP through performing a man-in-the-middle attack between the provider and verifier, or shoulder surfing, and replaying the OTP in the current time-step.

How to fix

Remediation Available
ruby-devise-two-factorDebian
Fixed in:2.0.0-1CVE-2015-7225
Fixed in:2.0.0-1CVE-2015-7225

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

1.78%probability of exploitation in 30 days
76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Related Vulnerabilities

Other CWE-254 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2016-0161Medium6.569%--
CVE-2016-2296Critical9.464%--
CVE-2015-1793Medium6.562%-Fix
CVE-2016-2118High7.537%-Fix
CVE-2016-3238High8.135%--
CVE-2016-3198Medium6.532%--
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.