Critical severity · published Apr 9, 2020
CVE-2020-11656
In SQLite through 3.31.1, the ALTER TABLE implementation has a use-after-free, as demonstrated by an ORDER BY clause that belongs to a compound SELECT statement
9.8
CVSS
8.7%
EPSS
No
On KEV
Description
In SQLite through 3.31.1, the ALTER TABLE implementation has a use-after-free, as demonstrated by an ORDER BY clause that belongs to a compound SELECT statement.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)8.7% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MY
MySQL · Oracle
8.0.0 through 8.0.22 · source: NVD
CM
Communications Messaging Server · Oracle
8.1 · source: NVD
CN
Communications Network Charging And Control · Oracle
12.0.0 through 12.0.3; 6.0.1; 12.0.2 · source: NVD
EM
Enterprise Manager Ops Center · Oracle
12.4.0.0 · source: NVD
HI
Hyperion Infrastructure Technology · Oracle
11.1.2.4 · source: NVD
MW
Mysql Workbench · Oracle
through 8.0.22 · source: NVD
OS
Ontap Select Deploy Administration Utility · Netapp
All versions, or not specified · source: NVD
OI
Outside IN Technology · Oracle
8.5.4; 8.5.5 · source: NVD
SI
Sinec Infrastructure Network Services · Siemens
before 1.0.1.1 · source: NVD
SQ
Sqlite · Sqlite
through 3.31.1 · source: NVD
TE
Tenable.sc · Tenable
through 5.19.0 · source: NVD
ZS
Zfs Storage Appliance Kit · Oracle
8.8 · 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 An update is available that replaces an outdated third-party component.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-2020-11656
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-11656
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:22.sqlite.asc
Third Party Advisory
https://security.gentoo.org/glsa/202007-26
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200416-0001/
Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html
Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2021.html
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