CVE-2018-13380

HIGHNVD 4.77.2▲
EchelonGraph scoreHIGH confidence

Score elevated to 7.2 because EPSS predicts 62% probability of exploitation within the next 30 days (top 0.9% of all CVEs). NVD baseline CVSS 4.7 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Elevated
7.2EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • 223 internet-exposed hosts are running an affected version right now
  • High exploitation likelihood — EPSS 62%
CISA-KEV: Not listedEPSS PROB: 62%CVSS: 4.7Exploit: Elevated riskExposed: 223

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

A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4.0 to 5.4.12, 5.2 and below and Fortinet FortiProxy 2.0.0, 1.2.8 and below under SSL VPN web portal allows attacker to execute unauthorized malicious script code via the error or message handling parameters.

Live · internet exposure

223 internet-exposed hosts are running an affected version of CVE-2018-13380 right now.

across 22 countries (United States, Canada, Australia, India, Germany)top: fortios
See the live KEV-Exposure radar →Found passively from public internet-scan data — aggregate, host-redacted.

EchelonGraph is the only CVE feed that fuses live vulnerability intelligence with its own live internet-exposure radar — so you see not just that a CVE is exploited, but how much of the internet is exposed to it right now.

CVSS v3
4.7
EG Score
7.2(high)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity72% × 45%
Exploitation62% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
62%
EPSS %ILE
99%
KEV
Not listed

Published

June 4, 2019

Last Modified

November 21, 2024

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 22× 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. 2026-08-20 22:51 UTCEPSS rescore
  2. 2026-08-19 17:00 UTCEPSS rescore
  3. 2026-08-18 13:43 UTCEPSS rescore
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  10. 2026-08-07 16:22 UTCEPSS rescore
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  12. 2026-08-02 02:23 UTCEPSS rescore
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  15. 2026-07-28 15:32 UTCEPSS rescore
  16. 2026-07-26 14:51 UTCEPSS rescore
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  18. 2026-07-24 14:14 UTCEPSS rescore
  19. 2026-07-23 14:15 UTCEPSS rescore
  20. 2026-07-23 14:15 UTCEPSS rescore
  21. 2026-07-23 01:33 UTCEG score recompute▲ 2.50
  22. 2026-07-22 22:13 UTCEG score recompute
  23. 2026-07-22 14:04 UTCEPSS rescore
  24. 2026-07-20 17:04 UTCEPSS rescore
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  1. 2026-07-19 02:26 UTCEPSS rescore
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  3. 2026-07-16 16:59 UTCEPSS rescore
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  5. 2026-07-15 16:55 UTCEPSS rescore
  6. 2026-07-13 22:26 UTCEPSS rescore
  7. 2026-07-13 06:10 UTCEPSS rescore
  8. 2026-07-12 05:43 UTCEPSS rescore
  9. 2026-07-11 08:24 UTCEPSS rescore
  10. 2026-07-09 19:06 UTCEPSS rescore
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  16. 2026-06-28 04:53 UTCEPSS rescore
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  18. 2026-06-27 03:06 UTCEPSS rescore
  19. 2026-06-25 13:47 UTCEPSS rescore
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  21. 2026-06-24 14:02 UTCEPSS rescore
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  25. 2026-06-21 01:57 UTCEPSS rescore
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  27. 2026-06-18 17:50 UTCEPSS rescore
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  36. 2026-06-13 22:58 UTCEPSS rescore
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  38. 2026-06-12 23:09 UTCEPSS rescore
  39. 2026-06-11 13:57 UTCEPSS rescore
  40. 2026-06-10 22:16 UTCEPSS rescore
  41. 2026-06-10 13:19 UTCEPSS rescore
  42. 2026-06-07 15:22 UTCEPSS rescore
  43. 2026-06-07 15:22 UTCEPSS rescore
  44. 2026-06-06 13:45 UTCEPSS rescore
  45. 2026-06-06 13:45 UTCEPSS rescore
  46. 2026-06-05 22:45 UTCEPSS rescore
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  48. 2026-06-05 06:08 UTCEPSS rescore
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  50. 2026-06-04 13:10 UTCEPSS rescore
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  52. 2026-06-02 20:11 UTCEPSS rescore
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  54. 2026-06-01 13:49 UTCEPSS rescore
  55. 2026-05-31 22:29 UTCEPSS rescore
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  57. 2026-05-31 00:14 UTCEPSS rescore
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  59. 2026-05-29 13:41 UTCEPSS rescore
  60. 2026-05-28 13:42 UTCEPSS rescore
  61. 2026-05-28 13:42 UTCEPSS rescore
  62. 2026-05-27 18:50 UTCEG score recompute
  63. 2026-05-27 18:50 UTCGHSA enrichment
  64. 2026-05-27 13:38 UTCEPSS rescore
  65. 2026-05-27 13:38 UTCEPSS rescore
  66. 2026-05-26 07:17 UTCEPSS rescore
  67. 2026-05-26 07:17 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2018/CVE-2018-13380.yaml
    First seen Jan 1, 2018

    Fortinet FortiOS - Cross-Site Scripting

    Open source ↗

Frequently asked(5)

What is CVE-2018-13380?
CVE-2018-13380 is a high vulnerability published on June 4, 2019. A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4.0 to 5.4.12, 5.2 and below and Fortinet FortiProxy 2.0.0, 1.2.8 and below under SSL VPN web portal allows attacker to execute unauthorized malicious script code via the error or message handling…
When was CVE-2018-13380 disclosed?
CVE-2018-13380 was first published in the National Vulnerability Database on June 4, 2019, 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-2018-13380 actively exploited?
CVE-2018-13380 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62% probability of exploitation in the next 30 days, which ranks it in the top 0.9% of all scored CVEs.
What is the CVSS score of CVE-2018-13380?
CVE-2018-13380 has a CVSS v3 base score of 4.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.2.
How do I remediate CVE-2018-13380?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-13380, 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

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