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Fencer Vulns
critical 9.8

CVE-2020-35527 json

In SQLite 3.31.1, there is an out of bounds access problem through ALTER TABLE for views that have a nested FROM clause.

published 2022-09-01 4 y ago modified 2026-10-14 26 d ago also BIT-sqlite-2020-35527 , EUVD-2020-23194

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

In SQLite 3.31.1, there is an out of bounds access problem through ALTER TABLE for views that have a nested FROM clause.

Patch / fix

  • bitnami sqlite 3.31.2
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • sqlite3 Debian 14, Debian 13, Debian 12 3.32.0-1

debian advisories DEBIAN-CVE-2020-35527

  • sqlite3 Ubuntu 20.04 LTS 3.31.1-4ubuntu0.4

ubuntu advisories UBUNTU-CVE-2020-35527

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • sqlite RHEL 8 3.26.0-16.el8_6
  • lemon RHEL 8 3.26.0-16.el8_6
  • sqlite-libs RHEL 8 3.26.0-16.el8_6

red hat advisories RHSA-2022:7108

  • sqlite AlmaLinux 8 3.26.0-16.el8_6
  • lemon AlmaLinux 8 3.26.0-16.el8_6
  • sqlite-libs AlmaLinux 8 3.26.0-16.el8_6

almalinux advisories ALSA-2022:7108

  • sqlite Rocky Linux 8 3.26.0-16.el8_6

rocky linux advisories RLSA-2022:7108

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-35527 updated cvss 8.1

sqlite: Out of bounds access during table rename

  • Red Hat Enterprise Linux 6 lemon, sqlite, sqlite-tcl Red Hat Enterprise Linux 7 lemon, sqlite, sqlite-tcl
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) lemon 3.26.0-16.el8_6 Red Hat Enterprise Linux BaseOS (v. 8) sqlite 3.26.0-16.el8_6, sqlite-libs 3.26.0-16.el8_6
    fixed: vendor fix RHSA-2022:7108
  • Red Hat Enterprise Linux 9 sqlite, sqlite-libs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 9.8

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

1.66% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami sqlite
>=3.31.1, <3.31.2
3.31.2

Affected products

  • n/a sqlite
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.