In SQLite 3.27.2, interleaving reads and writes in a single transaction with an fts5…
Priority MEDIUM 42CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
In SQLite 3.27.2, interleaving reads and writes in a single transaction with an fts5 virtual table will lead to a NULL Pointer Dereference in fts5ChunkIterate in sqlite3.c. This is related to ext/fts5/fts5_hash.c and ext/fts5/fts5_index.c.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.06136 93rd percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
Not affected: 3 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2019-9937
- 2026-10-03 Alias added: GHSA-q3jg-32q5-fgj2
- 2026-11-02 CISA SSVC decision points changed
References
Advisory 6
Other 5
- https://www.mail-archive.com/sqlite-users%40mailinglists.sqlite.org/msg114383.html
- https://www.mail-archive.com/sqlite-users%40mailinglists.sqlite.org/msg114393.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://www.oracle.com/security-alerts/cpujan2020.html
- [debian-lts-announce] 20200822 [SECURITY] [DLA 2340-1] sqlite3 security update
More Sqlite vulnerabilities
- TI-2026-82983 Heap buffer overflow in SQLite FTS5 rowid list merging CVSS 4.0HIGH 8.5
- TI-2025-43154 An information disclosure issue in the zipfileInflate function in the zipfile extension… CVSS 3.1HIGH 7.5
- TI-2025-06334 Integer Truncation on SQLite CVSS 4.0HIGH 7.2
- TI-2022-16180 SQLite 1.0.12 through 3.39.x before 3.39.2 sometimes allows an array-bounds overflow if… CVSS 3.1HIGH 7.5
- TI-2021-11445 An issue found in SQLite SQLite3 v.3.35.4 that allows a remote attacker to cause a denial… CVSS 3.1HIGH 7.5
- TI-2019-06073 Out-of-bounds read in SQLite CVSS 3.1CRITICAL 9.8
Sources
- CVE-2019-9937 · CVE Program
- CVE-2019-9937 · NVD
- FIRST EPSS
- GHSA-q3jg-32q5-fgj2 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-9937 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences