CVE-2018-20506

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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%
Exploitation8% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
94%
KEV
Not listed

Published

April 3, 2019

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated Sep 16, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 2340-1] sqlite3 security update

https://lists.debian.org/debian-lts-announce/2020/08/msg00037.html
generic

CVE-2018-20505 - PSIRT.COM

http://www.securityfocus.com/bid/106698
generic

Full Disclosure: APPLE-SA-2019-1-24-1 iTunes 12.9.3 for Windows

http://seclists.org/fulldisclosure/2019/Jan/69
generic

Full Disclosure: APPLE-SA-2019-1-22-3 watchOS 5.1.3

http://seclists.org/fulldisclosure/2019/Jan/68
generic

Full Disclosure: APPLE-SA-2019-1-22-6 iCloud for Windows 7.10

http://seclists.org/fulldisclosure/2019/Jan/67
generic

Full Disclosure: APPLE-SA-2019-1-22-4 tvOS 12.1.2

http://seclists.org/fulldisclosure/2019/Jan/66
generic

Full Disclosure: APPLE-SA-2019-1-22-1 iOS 12.1.3

http://seclists.org/fulldisclosure/2019/Jan/64
generic

Full Disclosure: APPLE-SA-2019-1-22-2 macOS Mojave 10.14.3, Security Update 2019-001 High Sierra, Security Update 2019-001 Sierra

http://seclists.org/fulldisclosure/2019/Jan/62

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntusqlite3-doc (3.11.0-1ubuntu1.2) @ xenial2026-05-27ubuntu
ubuntulibsqlite3-tcl (3.8.2-1ubuntu2.2+esm1) @ trusty2026-05-27ubuntu

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.

Affected Packages

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
sqlite3—3.25.3-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
sqlite3—3.25.3-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
sqlite3—3.25.3-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
sqlite3—3.25.3-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
sqlite33.8.7.1-1, 3.8.7.1-1+deb8u1, 3.8.7.1-1+deb8u23.8.7.1-1+deb8u3—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
sqlite33.16.2-5, 3.16.2-5+deb9u13.16.2-5+deb9u2—

Weakness Classification(1)

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

All Vendor Advisories

(3)

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 5× in last 7d / 23× 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 147 total refreshes for this CVE.

  1. 2026-09-19 15:36 UTCEPSS rescore
  2. 2026-09-18 19:22 UTCEPSS rescore
  3. 2026-09-17 19:22 UTCEPSS rescore
  4. 2026-09-16 05:06 UTCEPSS rescore
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  9. 2026-09-08 15:04 UTCOSV refresh
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  20. 2026-08-26 14:42 UTCEPSS rescore
  21. 2026-08-25 13:44 UTCEPSS rescore
  22. 2026-08-22 00:41 UTCOSV refresh
  23. 2026-08-21 23:45 UTCEPSS rescore
  24. 2026-08-20 22:51 UTCEPSS rescore
  25. 2026-08-19 17:00 UTCEPSS rescore
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  1. 2026-08-18 13:44 UTCEPSS rescore
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  11. 2026-08-06 13:42 UTCEPSS rescore
  12. 2026-08-06 05:51 UTCOSV refresh
  13. 2026-08-05 19:13 UTCEPSS rescore
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  20. 2026-07-25 14:14 UTCEPSS rescore
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  23. 2026-07-23 14:15 UTCEPSS rescore
  24. 2026-07-23 01:35 UTCEG score recompute
  25. 2026-07-22 22:15 UTCEG score recompute
  26. 2026-07-22 14:05 UTCEPSS rescore
  27. 2026-07-21 15:22 UTCEPSS rescore
  28. 2026-07-20 19:02 UTCOSV refresh
  29. 2026-07-20 17:04 UTCEPSS rescore
  30. 2026-07-20 17:04 UTCEPSS rescore
  31. 2026-07-19 14:28 UTCEPSS rescore
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  40. 2026-07-13 22:27 UTCEPSS rescore
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  44. 2026-07-11 08:24 UTCEPSS rescore
  45. 2026-07-09 19:06 UTCEPSS rescore
  46. 2026-07-08 15:11 UTCEPSS rescore
  47. 2026-07-07 13:42 UTCEPSS rescore
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  49. 2026-07-06 16:24 UTCEPSS rescore
  50. 2026-07-06 16:24 UTCEPSS rescore
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  53. 2026-07-04 06:28 UTCEPSS rescore
  54. 2026-07-04 06:28 UTCEPSS rescore
  55. 2026-07-03 14:26 UTCOSV refresh
  56. 2026-07-02 16:54 UTCEPSS rescore
  57. 2026-07-01 15:03 UTCEPSS rescore
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  59. 2026-06-30 23:20 UTCEPSS rescore
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  65. 2026-06-27 03:06 UTCEPSS rescore
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  67. 2026-06-25 13:47 UTCEPSS rescore
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  74. 2026-06-22 14:23 UTCEPSS rescore
  75. 2026-06-21 01:57 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-20506?
CVE-2018-20506 is a high vulnerability published on April 3, 2019. SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to…
When was CVE-2018-20506 disclosed?
CVE-2018-20506 was first published in the National Vulnerability Database on April 3, 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-2018-20506 actively exploited?
CVE-2018-20506 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8% probability of exploitation in the next 30 days, which ranks it in the top 5.8% of all scored CVEs.
What is the CVSS score of CVE-2018-20506?
CVE-2018-20506 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2018-20506?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20506, 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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