An issue found in SQLite SQLite3 v.3.35.4 that allows a remote attacker to cause a denial…
Priority HIGH 72CWE-125Published · 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
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
An issue found in SQLite SQLite3 v.3.35.4 that allows a remote attacker to cause a denial of service via the appendvfs.c function.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02447 84th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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: Moderate. Red Hat's page for this CVE →
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2021-31239
- 2026-10-03 Alias added: GHSA-mv5m-45gv-gh97
References
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-2019-06073 Out-of-bounds read in SQLite CVSS 3.1CRITICAL 9.8
- TI-2022-23247 SQLite through 3.40.0, when relying on --safe for execution of an untrusted CLI script… CVSS 3.1HIGH 7.3
Sources
- CVE-2021-31239 · CVE Program
- CVE-2021-31239 · NVD
- FIRST EPSS
- GHSA-mv5m-45gv-gh97 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-31239 · 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