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.

Published: 2020-04-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-11656 is rated High Risk (71.2/100): CVSS Critical severity, with high exploitation likelihood (EPSS 6.23%, 91th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-11656

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-29 6.08% 6.23% +0.16%
2 2026-04-14 4.57% 6.08% +1.51%
3 2026-03-10 — 4.57% —

Full EPSS history (54 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-11656

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2020-11656

OS Trackers for CVE-2020-11656

vendor priority summary link
alpine critical CVE-2020-11656: 1 source package rows (sqlite); 17 state rows across 7 repos (3.10-main, 3.11-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 17. https://security.alpinelinux.org/vuln/CVE-2020-11656
debian unimportant CVE-2020-11656 unimportant priority: Debian including 1 source packages (sqlite3), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-11656
gentoo normal CVE-2020-11656: 1 GLSA(s) (202007-26), 1 atom(s) (dev-db/sqlite); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-11656
redhat medium — https://access.redhat.com/security/cve/CVE-2020-11656
suse medium CVE-2020-11656 severity moderate: SUSE including 10 source package names (libsqlite3-0, libsqlite3-0-32bit, …), 340 product×package rows across 112 product lines (Magnum Orchestration 7, SLES for SAP Applications 11 SP2, … (112 product lines)): Known Not Affected 340. https://www.suse.com/security/cve/CVE-2020-11656/
ubuntu negligible CVE-2020-11656 negligible priority: Ubuntu including 2 source packages (sqlite, sqlite3), 12 status rows across 6 suites (bionic, eoan, focal, trusty, upstream, xenial): not-affected 10, needs-triage 2. https://ubuntu.com/security/CVE-2020-11656

Affected software / configurations for CVE-2020-11656

Vendor Product Version Raw CPE
sqlite sqlite <= 3.31.1 cpe:2.3:a:sqlite:sqlite:*:*:*:*:*:*:*:*
netapp ontap_select_deploy_administration_utility — cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
oracle communications_network_charging_and_control >= 12.0.0, <= 12.0.3 cpe:2.3:a:oracle:communications_network_charging_and_control:*:*:*:*:*:*:*:*
oracle communications_network_charging_and_control 6.0.1 cpe:2.3:a:oracle:communications_network_charging_and_control:6.0.1:*:*:*:*:*:*:*
oracle communications_network_charging_and_control 12.0.2 cpe:2.3:a:oracle:communications_network_charging_and_control:12.0.2:*:*:*:*:*:*:*
oracle enterprise_manager_ops_center 12.4.0.0 cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
oracle hyperion_infrastructure_technology 11.1.2.4 cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4:*:*:*:*:*:*:*
oracle mysql >= 8.0.0, <= 8.0.22 cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*
oracle mysql_workbench <= 8.0.22 cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:*
oracle outside_in_technology 8.5.4 cpe:2.3:a:oracle:outside_in_technology:8.5.4:*:*:*:*:*:*:*
oracle outside_in_technology 8.5.5 cpe:2.3:a:oracle:outside_in_technology:8.5.5:*:*:*:*:*:*:*
oracle zfs_storage_appliance_kit 8.8 cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
oracle communications_messaging_server 8.1 cpe:2.3:o:oracle:communications_messaging_server:8.1:*:*:*:*:*:*:*
siemens sinec_infrastructure_network_services < 1.0.1.1 cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
tenable tenable.sc <= 5.19.0 cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*

References for CVE-2020-11656

URL Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch 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 Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2020.html Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html Third Party Advisory
https://www.sqlite.org/src/info/d09f8c3621d5f7f8 Patch Vendor Advisory
https://www.tenable.com/security/tns-2021-14 Release Notes Third Party Advisory
https://www3.sqlite.org/cgi/src/info/b64674919f673602 Patch Vendor Advisory
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