CVE-2020-15358: In SQLite before 3.32.3 select.c mishandles query-flattener optimization leading to a multiSelectOrderBy heap overflow because of misuse of transitive properties for constant propagation.

mediumCVSS 5.5CVE-2020-15358

CSIRTS triage

vendor: SQLite product: SQLite Memory corruptionaffected: before 3.32.3

What: The query-flattener optimization in select.c mishandles constant propagation through transitive properties, causing a heap overflow.
Who is affected: SQLite versions before 3.32.3 processing certain complex queries with constant propagation are affected.
Urgency: Medium; heap overflow with CVSS 5.5 requiring a crafted query; not actively exploited.
Action: Upgrade to SQLite 3.32.3 or later.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-15358

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Moderate exploitation riskCVE-2020-153581.0% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 61% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2020-15358	coverage & exploitation status	NVD · CVE.org

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