High severity · published Apr 3, 2019
CVE-2018-20506
SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after…
8.1
CVSS
7.5%
EPSS
No
On KEV
Description
SQLite before 3.25.3, when the FTS3 extension is enabled, encounters an integer overflow (and resultant buffer overflow) for FTS3 queries in a "merge" operation that occurs after crafted changes to FTS3 shadow tables, allowing remote attackers to execute arbitrary code by leveraging the ability to run arbitrary SQL statements (such as in certain WebSQL use cases). This is a different vulnerability than CVE-2018-20346.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)7.5% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 12.1.3 · source: NVD
IC
Icloud · Apple
through 7.10 · source: NVD
IT
Itunes · Apple
through 12.9.3 · source: NVD
LE
Leap · Opensuse
42.3 · source: NVD
MO
Mac OS X · Apple
before 10.14.3 · source: NVD
SQ
Sqlite · Sqlite
before 3.25.3 · source: NVD
TV
Tvos · Apple
before 12.1.2 · source: NVD
WA
Watchos · Apple
before 5.1.3 · source: NVD
In the news
VulnerabilityCritical
ABB B&R Automation Studio
View CSAF
Summary
ABB became aware of vulnerability in the product versions listed as affected in the advisory. An update is available that replaces an outdated third-party component. Although no successful exploitation was observed during testing of the affected B&R products, the identified vulnerabilities could present potential attack vectors that might enable unauthorized access, data exposure, or remote code execution.
The following versions of ABB B&R Automation Studio are affected:
B&R Automation Studio <6.5, 6.5 (CVE-2025-6965, CVE-2025-3277, CVE-2023-7104, CVE-2022-35737, CVE-2020-15358, CVE-2020-13632, CVE-2020-13631, CVE-2020-13630, CVE-2020-13435, CVE-2020-13434, CVE-2020-11656, CVE-2020-11655, CVE-2019-19646, CVE-2019-19645, CVE-2019-8457, CVE-2018-20506, CVE-2018-20505, CVE-2018-20346, CVE-2018-8740, CVE-2017-10989, CVE-2016-6153, CVE-2015-6607, CVE-2015-5895, CVE-2015-3717, CVE-2015-3416)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.8
ABB
ABB B&R Automation Studio
Numeric Truncation Error, Heap-based Buffer Overflow, Improper Restriction of Operations within the Bounds of a Memory Buffer, Out-of-bounds Write, NULL Pointer Dereference, Incorrect User Management, Use After Free, Integer Overflow or Wraparound, Improper Check for Unusual or Exceptional Conditions, Uncontrolled Recursion, Out-of-bounds Read, Improper Input Validation, Exposure of Sensitive Information to an Unauthorized Actor, Buffer ...
May 21, 2026·CISA Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-20506
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-20506
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00070.html
Mailing List
http://seclists.org/fulldisclosure/2019/Jan/62
Mailing List
http://seclists.org/fulldisclosure/2019/Jan/64
Mailing List
http://seclists.org/fulldisclosure/2019/Jan/66
Mailing List
http://seclists.org/fulldisclosure/2019/Jan/67
Mailing List
http://seclists.org/fulldisclosure/2019/Jan/68
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