Is CVE-2014-8686 in the CISA KEV catalog?

No. CVE-2014-8686 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-8686?

CVE-2014-8686 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2014-8686?

CVE-2014-8686 has an EPSS score of 37.22% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2014-8686?

No published fix for CVE-2014-8686 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2014-8686

CRITICALEPSS 98th pctl

9.8

CVSS v3

NVD

Description

CodeIgniter before 2.2.0 makes it easier for attackers to decode session cookies by leveraging fallback to a custom XOR-based encryption scheme when the Mcrypt extension for PHP is not available.

CWE-310Cryptographic Issues

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

37.22%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Exploit1

beyondbinary.io

Vendor Advisory1

codeigniter.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-310 (Cryptographic Issues) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-3566	Low	3.4	100%	-	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2015-0204	Medium	4.3	99%	-	Fix
CVE-2016-2107	Medium	5.9	89%	-	Fix
CVE-2016-0800	Medium	5.9	82%	-	Fix
CVE-2014-8684	Critical	9.8	72%	-	-

Embed a live status badge for CVE-2014-8686

Markdown

[![CVE-2014-8686](https://tridentstack.com/cve/badge/CVE-2014-8686.svg)](https://tridentstack.com/cve/CVE-2014-8686)

HTML

<a href="https://tridentstack.com/cve/CVE-2014-8686"><img src="https://tridentstack.com/cve/badge/CVE-2014-8686.svg" alt="CVE-2014-8686"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

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.