CVE-2018-4937

CRITICALNVD 8.89.8▲
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 8.8; sources differ by 1.0.

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 (Exploit-DB (verified), epss top5pct, public exploit)
CISA-KEV: Not listedEPSS PROB: 26%CVSS: 8.8Exploit: Exploit-DB (verified) · epss top5pct · public exploitExposed: 0

A fix is available — apply it.

Adobe Flash Player versions 29.0.0.113 and earlier have an exploitable out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.

CVSS v3
8.8
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
26%
EPSS %ILE
98%
KEV
Not listed

Published

May 19, 2018

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Aug 2, 2026
🔬 Proof of concept available. Patch available. Sources: redhat.
redhat Patch Available

Affected: Red Hat Enterprise Linux 6 Supplementary.

https://access.redhat.com/errata/RHSA-2018:1119
generic
http://www.securitytracker.com/id/1040648
generic

SecurityFocus

http://www.securityfocus.com/bid/103708
generic🟡 PoC Available

Adobe Flash - Out-of-Bounds Write in blur Filtering - Multiple dos Exploit

https://www.exploit-db.com/exploits/44529/
generic

Adobe Flash Player: Multiple vulnerabilities (GLSA 201804-11) — Gentoo security

https://security.gentoo.org/glsa/201804-11

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatflash-plugin-0:29.0.0.140-1.el6_92018-04-11redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 4× in last 7d / 20× 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.

Showing the most recent 100 of 114 total refreshes for this CVE.

  1. 2026-09-06 13:44 UTCEPSS rescore
  2. 2026-09-04 13:56 UTCEPSS rescore
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  1. 2026-08-01 04:12 UTCEPSS rescore
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  12. 2026-07-23 01:36 UTCEG score recompute
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  25. 2026-07-15 01:56 UTCEPSS rescore
  26. 2026-07-13 22:27 UTCEPSS rescore
  27. 2026-07-13 06:10 UTCEPSS rescore
  28. 2026-07-12 05:43 UTCEPSS rescore
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  45. 2026-06-27 03:06 UTCEPSS rescore
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  47. 2026-06-25 13:47 UTCEPSS rescore
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  50. 2026-06-24 14:02 UTCEPSS rescore
  51. 2026-06-23 21:30 UTCEPSS rescore
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  63. 2026-06-13 22:58 UTCEPSS rescore
  64. 2026-06-12 23:09 UTCEPSS rescore
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  66. 2026-06-11 13:57 UTCEPSS rescore
  67. 2026-06-10 22:16 UTCEPSS rescore
  68. 2026-06-10 13:19 UTCEPSS rescore
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  74. 2026-06-05 06:08 UTCEPSS rescore
  75. 2026-06-05 06:08 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-44529✓ verified
    First seen Apr 24, 2018

    Adobe Flash - Out-of-Bounds Write in blur Filtering

    Open source ↗

Frequently asked(5)

What is CVE-2018-4937?
CVE-2018-4937 is a critical vulnerability published on May 19, 2018. Adobe Flash Player versions 29.0.0.113 and earlier have an exploitable out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
When was CVE-2018-4937 disclosed?
CVE-2018-4937 was first published in the National Vulnerability Database on May 19, 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-2018-4937 actively exploited?
CVE-2018-4937 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26% probability of exploitation in the next 30 days, which ranks it in the top 2.1% of all scored CVEs.
What is the CVSS score of CVE-2018-4937?
CVE-2018-4937 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.8.
How do I remediate CVE-2018-4937?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-4937, 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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