CVE-2014-8686

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-17. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, public exploit)
CISA-KEV: Not listedEPSS PROB: 37%CVSS: 9.8Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Track*)
EG Risk 75/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
37%
EPSS %ILE
98%
KEV
Not listed

Published

September 19, 2017

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Jul 26, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

CodeIgniter Session Decoding Vulnerability

https://www.dionach.com/blog/codeigniter-session-decoding-vulnerability
generic

Change Log : CodeIgniter User Guide

https://codeigniter.com/userguide2/changelog.html
generic🟡 PoC Available

Beyond Binary - Advisory: Seagate NAS Remote Code Execution Vulnerability

https://beyondbinary.io/articles/seagate-nas-rce/
generic

Packet Storm

http://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 14:50 UTCEPSS rescore
  2. 2026-07-24 14:13 UTCEPSS rescore
  3. 2026-07-23 14:14 UTCEPSS rescore
  4. 2026-07-23 01:14 UTCEG score recompute
  5. 2026-07-23 00:18 UTCEG score recompute
  6. 2026-07-22 21:56 UTCEG score recompute
  7. 2026-07-22 14:04 UTCEPSS rescore
  8. 2026-07-21 15:21 UTCEPSS rescore
  9. 2026-07-21 15:21 UTCEPSS rescore
  10. 2026-07-20 17:03 UTCEPSS rescore
  11. 2026-07-19 02:26 UTCEPSS rescore
  12. 2026-07-19 02:26 UTCEPSS rescore
  13. 2026-07-18 10:00 UTCEPSS rescore
  14. 2026-07-16 16:59 UTCEPSS rescore
  15. 2026-07-15 16:54 UTCEPSS rescore
  16. 2026-07-15 16:54 UTCEPSS rescore
  17. 2026-07-13 22:26 UTCEPSS rescore
  18. 2026-07-13 06:08 UTCEPSS rescore
  19. 2026-07-12 05:42 UTCEPSS rescore
  20. 2026-07-12 05:42 UTCEPSS rescore
  21. 2026-07-11 08:23 UTCEPSS rescore
  22. 2026-07-09 19:05 UTCEPSS rescore
  23. 2026-07-08 15:10 UTCEPSS rescore
  24. 2026-07-07 13:42 UTCEPSS rescore
  25. 2026-07-06 02:20 UTCEPSS rescore
Show 72 more
  1. 2026-07-01 15:02 UTCEPSS rescore
  2. 2026-07-01 15:02 UTCEPSS rescore
  3. 2026-06-29 14:02 UTCEPSS rescore
  4. 2026-06-28 04:53 UTCEPSS rescore
  5. 2026-06-28 04:53 UTCEPSS rescore
  6. 2026-06-27 03:05 UTCEPSS rescore
  7. 2026-06-25 13:47 UTCEPSS rescore
  8. 2026-06-25 13:47 UTCEPSS rescore
  9. 2026-06-24 14:02 UTCEPSS rescore
  10. 2026-06-24 14:02 UTCEPSS rescore
  11. 2026-06-23 21:30 UTCEPSS rescore
  12. 2026-06-23 21:30 UTCEPSS rescore
  13. 2026-06-22 14:22 UTCEPSS rescore
  14. 2026-06-22 14:22 UTCEPSS rescore
  15. 2026-06-21 01:57 UTCEPSS rescore
  16. 2026-06-19 19:23 UTCEPSS rescore
  17. 2026-06-18 17:49 UTCEPSS rescore
  18. 2026-06-18 17:49 UTCEPSS rescore
  19. 2026-06-17 17:49 UTCEPSS rescore
  20. 2026-06-17 17:49 UTCEPSS rescore
  21. 2026-06-16 17:50 UTCEPSS rescore
  22. 2026-06-16 17:49 UTCEPSS rescore
  23. 2026-06-16 17:49 UTCEPSS rescore
  24. 2026-06-14 23:14 UTCEPSS rescore
  25. 2026-06-13 22:57 UTCEPSS rescore
  26. 2026-06-12 23:08 UTCEPSS rescore
  27. 2026-06-11 13:57 UTCEPSS rescore
  28. 2026-06-10 22:15 UTCEPSS rescore
  29. 2026-06-08 14:14 UTCEPSS rescore
  30. 2026-06-07 15:22 UTCEPSS rescore
  31. 2026-06-06 13:45 UTCEPSS rescore
  32. 2026-06-06 13:45 UTCEPSS rescore
  33. 2026-06-05 22:44 UTCEPSS rescore
  34. 2026-06-05 06:08 UTCEPSS rescore
  35. 2026-06-05 06:08 UTCEPSS rescore
  36. 2026-06-04 13:09 UTCEPSS rescore
  37. 2026-06-04 13:09 UTCEPSS rescore
  38. 2026-06-02 20:10 UTCEPSS rescore
  39. 2026-06-02 20:10 UTCEPSS rescore
  40. 2026-06-01 13:49 UTCEPSS rescore
  41. 2026-06-01 13:49 UTCEPSS rescore
  42. 2026-05-31 22:28 UTCEPSS rescore
  43. 2026-05-31 22:28 UTCEPSS rescore
  44. 2026-05-31 00:14 UTCEPSS rescore
  45. 2026-05-31 00:14 UTCEPSS rescore
  46. 2026-05-29 13:41 UTCEPSS rescore
  47. 2026-05-28 13:42 UTCEPSS rescore
  48. 2026-05-28 13:42 UTCEPSS rescore
  49. 2026-05-28 13:42 UTCEPSS rescore
  50. 2026-05-27 13:38 UTCEPSS rescore
  51. 2026-05-27 13:38 UTCEPSS rescore
  52. 2026-05-26 07:16 UTCEPSS rescore
  53. 2026-05-22 21:15 UTCEPSS rescore
  54. 2026-05-22 21:15 UTCEPSS rescore
  55. 2026-05-22 21:15 UTCEPSS rescore
  56. 2026-05-21 22:39 UTCEPSS rescore
  57. 2026-05-20 22:37 UTCEPSS rescore
  58. 2026-05-20 22:37 UTCEPSS rescore
  59. 2026-05-20 22:37 UTCEPSS rescore
  60. 2026-05-20 11:21 UTCEPSS rescore
  61. 2026-05-20 11:21 UTCEPSS rescore
  62. 2026-05-20 09:08 UTCGHSA enrichment
  63. 2026-05-20 05:29 UTCGHSA enrichment
  64. 2026-05-20 01:51 UTCGHSA enrichment
  65. 2026-05-19 22:13 UTCGHSA enrichment
  66. 2026-05-19 18:35 UTCGHSA enrichment
  67. 2026-05-19 14:57 UTCGHSA enrichment
  68. 2026-05-19 11:19 UTCGHSA enrichment
  69. 2026-05-19 07:21 UTCGHSA enrichment
  70. 2026-05-19 03:40 UTCGHSA enrichment
  71. 2026-05-19 00:03 UTCEG score recompute
  72. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-36264✓ verified
    First seen Mar 4, 2015

    Seagate Business NAS - Remote Command Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/linux/http/seagate_nas_php_exec_noauth✓ verified
    First seen Mar 1, 2015

    Seagate Business NAS Unauthenticated Remote Command Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2014-8686?
CVE-2014-8686 is a critical vulnerability published on September 19, 2017. 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.
When was CVE-2014-8686 disclosed?
CVE-2014-8686 was first published in the National Vulnerability Database on September 19, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2014-8686 actively exploited?
CVE-2014-8686 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37% probability of exploitation in the next 30 days, which ranks it in the top 1.6% of all scored CVEs.
What is the CVSS score of CVE-2014-8686?
CVE-2014-8686 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2014-8686?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-8686, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2014-8686

Explore →

Is Your Infrastructure Affected by CVE-2014-8686?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs