CVE-2018-20855

LOWNVD 3.33.3
EchelonGraph scoreLOW confidence

This low-severity CVE scores 3.3 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: nvd
3.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 3.3Exploit: NoneExposed: 0

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

An issue was discovered in the Linux kernel before 4.18.7. In create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace.

CVSS v3
3.3
EG Score
3.3(low)
EPSS
36.9%
KEV
Not listed

Published

July 26, 2019

Last Modified

November 21, 2024

References (12)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 51× 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. 2026-07-06 16:24 UTCEPSS rescore
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  22. 2026-06-24 05:29 UTCOSV refresh
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  1. 2026-06-22 14:23 UTCEPSS rescore
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  20. 2026-06-11 13:57 UTCEPSS rescore
  21. 2026-06-10 22:16 UTCEPSS rescore
  22. 2026-06-10 13:19 UTCEPSS rescore
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  25. 2026-06-07 15:22 UTCEPSS rescore
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  27. 2026-06-07 09:30 UTCOSV refresh
  28. 2026-06-06 13:45 UTCEPSS rescore
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  39. 2026-05-31 22:29 UTCEPSS rescore
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  42. 2026-05-29 13:41 UTCEPSS rescore
  43. 2026-05-28 13:42 UTCEPSS rescore
  44. 2026-05-28 13:42 UTCEPSS rescore
  45. 2026-05-27 13:38 UTCEPSS rescore
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  47. 2026-05-26 13:42 UTCEPSS rescore
  48. 2026-05-26 13:42 UTCEPSS rescore
  49. 2026-05-26 07:17 UTCEPSS rescore
  50. 2026-05-26 07:17 UTCEPSS rescore
  51. 2026-05-23 03:05 UTCEG score recompute
  52. 2026-05-23 03:05 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-20855?
CVE-2018-20855 is a low vulnerability published on July 26, 2019. An issue was discovered in the Linux kernel before 4.18.7. In createqpcommon in drivers/infiniband/hw/mlx5/qp.c, mlx5ibcreateqpresp was never initialized, resulting in a leak of stack memory to userspace.
When was CVE-2018-20855 disclosed?
CVE-2018-20855 was first published in the National Vulnerability Database on July 26, 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-2018-20855 actively exploited?
CVE-2018-20855 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-20855?
CVE-2018-20855 has a CVSS v3 base score of 3.3 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2018-20855?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20855, 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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