CVE-2018-8011

HIGHNVD 7.58.1▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.1 because EPSS predicts 52% probability of exploitation within the next 30 days (top 1.2% of all CVEs). NVD baseline CVSS 7.5 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
7.5
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • 1 internet-exposed host is running an affected version right now
  • High exploitation likelihood — EPSS 52%
CISA-KEV: Not listedEPSS: 52%CVSS: 7.5Exploit: NoneExposed: 1

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

By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33).

Live · internet exposure

1 internet-exposed host is running an affected version of CVE-2018-8011 right now.

across 1 countries (Hungary)top: http_server
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
7.5
EG Score
8.1(high)
EG Risk
62(Track)
EG Risk 62/100SSVC: 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
Severity81% × 45%
Exploitation52% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
98.8%
KEV
Not listed

Published

July 18, 2018

Last Modified

November 21, 2024

References (30)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 34× 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. 2026-07-24 14:14 UTCEPSS rescore
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  3. 2026-07-23 14:15 UTCEPSS rescore
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  5. 2026-07-23 01:37 UTCEG score recompute▲ 0.60
  6. 2026-07-22 22:17 UTCEG score recompute
  7. 2026-07-22 14:05 UTCEPSS rescore
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  9. 2026-07-21 08:18 UTCOSV refresh
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  1. 2026-07-01 15:03 UTCEPSS rescore
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  26. 2026-06-15 15:43 UTCOSV refresh
  27. 2026-06-14 23:15 UTCEPSS rescore
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  32. 2026-06-11 13:57 UTCEPSS rescore
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  45. 2026-06-01 13:50 UTCEPSS rescore
  46. 2026-05-31 22:29 UTCEPSS rescore
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  48. 2026-05-31 00:14 UTCEPSS rescore
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  50. 2026-05-29 13:41 UTCEPSS rescore
  51. 2026-05-28 13:43 UTCEPSS rescore
  52. 2026-05-28 13:42 UTCEPSS rescore
  53. 2026-05-28 04:59 UTCEG score recompute
  54. 2026-05-27 13:38 UTCEPSS rescore
  55. 2026-05-26 13:42 UTCEPSS rescore
  56. 2026-05-26 13:42 UTCEPSS rescore
  57. 2026-05-26 07:17 UTCEPSS rescore
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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.

  • Nucleijavascript/cves/2018/CVE-2018-8011.yaml
    First seen Jan 1, 2018

    Apache HTTP Server - NULL Pointer Dereference

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-8011?
CVE-2018-8011 is a high vulnerability published on July 18, 2018. By specially crafting HTTP requests, the mod_md challenge handler would dereference a NULL pointer and cause the child process to segfault. This could be used to DoS the server. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.33).
When was CVE-2018-8011 disclosed?
CVE-2018-8011 was first published in the National Vulnerability Database on July 18, 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-2018-8011 actively exploited?
CVE-2018-8011 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-8011?
CVE-2018-8011 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.1.
How do I remediate CVE-2018-8011?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-8011, 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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