CVE-2018-15321

MEDIUMNVD 4.94.9—
EchelonGraph scoreMEDIUM confidence

Score 4.9 from GitHub Security Advisory published 2022-05-13. NVD baseline CVSS 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 4.9Exploit: NoneExposed: 0

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

When BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.2.1-11.5.6, BIG-IQ Centralized Management 5.0.0-5.4.0 or 4.6.0, BIG-IQ Cloud and Orchestration 1.0.0, iWorkflow 2.1.0-2.3.0, or Enterprise Manager 3.1.1 is licensed for Appliance Mode, Admin and Resource administrator roles can by-pass BIG-IP Appliance Mode restrictions to overwrite critical system files. Attackers of high privilege level are able to overwrite critical system files which bypasses security controls in place to limit TMSH commands. This is possible with an administrator or resource administrator roles when granted TMSH. Resource administrator roles must have TMSH access in order to perform this attack.

CVSS v3
4.9
EG Score
4.9(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity49% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
55.8%
KEV
Not listed

Published

October 31, 2018

Last Modified

November 21, 2024

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 41× 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. 2026-07-23 01:33 UTCEG score recompute
  2. 2026-07-22 22:13 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
  4. 2026-07-21 15:21 UTCEPSS rescore
  5. 2026-07-20 17:04 UTCEPSS rescore
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  1. 2026-07-04 06:28 UTCEPSS rescore
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  22. 2026-06-19 19:23 UTCEPSS rescore
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  40. 2026-06-07 15:22 UTCEPSS rescore
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  42. 2026-06-06 13:45 UTCEPSS rescore
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  44. 2026-06-05 22:45 UTCEPSS rescore
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  53. 2026-05-31 22:29 UTCEPSS rescore
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  55. 2026-05-29 13:41 UTCEPSS rescore
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  57. 2026-05-28 13:42 UTCEPSS rescore
  58. 2026-05-28 01:31 UTCEG score recompute
  59. 2026-05-28 01:31 UTCGHSA enrichment
  60. 2026-05-27 13:38 UTCEPSS rescore
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  62. 2026-05-26 13:42 UTCEPSS rescore
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  64. 2026-05-26 07:17 UTCEPSS rescore
  65. 2026-05-26 07:17 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-15321?
CVE-2018-15321 is a medium vulnerability published on October 31, 2018. When BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.2.1-11.5.6, BIG-IQ Centralized Management 5.0.0-5.4.0 or 4.6.0, BIG-IQ Cloud and Orchestration 1.0.0, iWorkflow 2.1.0-2.3.0, or Enterprise Manager 3.1.1 is licensed for Appliance Mode, Admin and Resource…
When was CVE-2018-15321 disclosed?
CVE-2018-15321 was first published in the National Vulnerability Database on October 31, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-15321 actively exploited?
CVE-2018-15321 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 55.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-15321?
CVE-2018-15321 has a CVSS v3 base score of 4.9 (NVD).
How do I remediate CVE-2018-15321?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-15321, 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.

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