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No exploitation reportedFix available

CVE-2018-20346

No exploitation reported by the sources we read.

  • Published2018-12-21
  • Fixed in3.25.3
  • WeaknessCWE-190

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries that occur 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), aka Magellan.

Timeline

dates in UTC
  1. 2018-12-2121:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-20346?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-20346?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Sqlite
BranchAffectedFixed in
3.25< 3.25.33.25.3
Opensuse leap
BranchAffectedFixed in
15.0= 15.0no fix published
42.3= 42.3no fix published
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no fix published

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • cephAzure Linux:3all versions · fixed in 18.2.1-1
  • chromiumDebian:14all versions · fixed in 71.0.3578.80-1
  • chromiumDebian:13all versions · fixed in 71.0.3578.80-1
  • chromiumDebian:12all versions · fixed in 71.0.3578.80-1
  • chromium-browserDebian:9all versions · fixed in 71.0.3578.80-1~deb9u1
  • sqliteAlpine:v3.8all versions · fixed in 3.25.3-r0
  • sqliteAlpine:v3.7all versions · fixed in 3.25.3-r0
  • sqliteAlpine:v3.6all versions · fixed in 3.25.3-r0

46 more package ranges on OSV.dev

Vendor advisories

  • CVE-2018-20346 Red Hat Product Security

    sqlite: Multiple flaws in sqlite which can be triggered via corrupted internal databases (Magellan)

  • ICSA-26-141-03 CISA1 product fixed · 1 known affected

    ABB B&R Automation Studio

    ABB B&R Automation Studio <6.5

Full record on NVD

Fix

  1. Update Sqlite to 3.25.3
  2. Vendor fix CISA ICSA-26-141-03 · 1 productThe problem is corrected in the following product versions: B&R Automation Studio 6.5 B&R recommends that customers apply the update at earliest convenience. The process to install updates is described in the user manual. The step to identify the installed product version is described in the use…
  3. Mitigation from the vendor CISA ICSA-26-141-03 · 1 productRefer to section “General security recommendations” for advice on how to keep your system secure.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.08.1read 2026-10-23
  • NVDCVSS 2.06.8read 2026-10-23
  • NVDweakness (CWE)CWE-190read 2026-10-23
  • FIRST EPSSEPSS score10.2 %read 2026-11-03
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-12-21
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2018-20346?

SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries that occur 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), aka Magellan.

Is CVE-2018-20346 actively exploited?

Active exploitation of CVE-2018-20346 has not been confirmed. Its EPSS score was 10.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-20346?

CVE-2018-20346 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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