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Fencer Vulns
high 7.5

CVE-2020-11655 json

SQLite through 3.31.1 allows attackers to cause a denial of service (segmentation fault) via a malformed window-function query because the…

published 2020-04-09 6 y ago modified 2026-10-16 24 d ago also BIT-sqlite-2020-11655 , EUVD-2020-3998

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

SQLite through 3.31.1 allows attackers to cause a denial of service (segmentation fault) via a malformed window-function query because the AggInfo object's initialization is mishandled.

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 3.31.1-5

debian advisories DEBIAN-CVE-2020-11655

  • sqlite3 Ubuntu 20.04 LTS 3.31.1-4ubuntu0.1

ubuntu advisories UBUNTU-CVE-2020-11655

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 Alpine 3.10, Alpine 3.9 3.28.0-r3
  • sqlite Alpine 3.11 3.30.1-r2
  • sqlite Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 3.30.1-r3
  • sqlite Alpine 3.8 3.25.0-r4

alpine advisories ALPINE-CVE-2020-11655

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ceph Azure Linux 3.0 18.2.1-1

azure linux advisories AZL-39034

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2020-11655 updated cvss 7.5

sqlite: malformed window-function query leads to DoS

  • Red Hat Openshift Data Foundation 4.19 odf4 v4.19-1757571573, odf4 v4.19-1757571580, odf4 v4.19-1757571599, odf4 v4.19-1757571617, odf4 v4.19-1757571651, odf4 v4.19-1757571685, +14 more
    fixed: vendor fix RHSA-2025:16504
  • Red Hat Enterprise Linux 5 sqlite Red Hat Enterprise Linux 6 lemon, sqlite, sqlite-tcl Red Hat Enterprise Linux 7 lemon, sqlite, sqlite-tcl Red Hat Enterprise Linux 8 lemon, sqlite, sqlite-libs Red Hat Openshift Data Foundation 4.19 odf4 v4.19-1757583187, odf4 v4.19-1757583190, odf4 v4.19-1757583196, odf4 v4.19-1757583200, odf4 v4.19-1757583205, odf4 v4.19-1757583213, +4 more
    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-26-141-03 updated cvss 7.5

ABB B&R Automation Studio

  • ABB B&R Automation Studio <6.5
    affected: vendor fix, mitigation
  • ABB B&R Automation Studio 6.5
    fixed

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

cisa ICSA-23-348-10 updated cvss 7.5

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

4.30% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • www3.sqlite.org https://www3.sqlite.org/cgi/src/tktview?name=af4556bb5c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami sqlite
<3.31.2
3.31.2

Affected products

  • 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
Technology feeds

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.