CVE-2020-11655 — SQLite through 3.31.1 allows attackers to cause a denial of service (segmentation fault) via a...

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

• Documented patch — cert-portal.siemens.com (NIST National Vulnerability Database)
• Documented patch — www3.sqlite.org (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Canonical Ubuntu Linux, Debian Debian Linux, Netapp Ontap Select Deploy Administration Utility…).
2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
3. Apply the fixed version or the patch documented under Remediation.
4. EPSS ahead of 91% of scored CVEs: prioritize it in the patch queue.
5. Search available logs for exploit probes matching the vulnerability class (logic error), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-665 · Improper Initialization

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 15, 2026 · 3 reading(s) · max 4.34%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

Timeline

What happened to this CVE, newest first.

• 2026
• Record published
  Oct 14, 2026
• Fix documented
  Oct 14, 2026 · NIST National Vulnerability Database
• Affected products added · sqlite/sqlite, netapp/ontap select deploy administration utility, debian/debian linux, canonical/ubuntu linux, oracle/co
  Oct 14, 2026 · NIST National Vulnerability Database
• CVSS changed · 7.5
  Oct 14, 2026 · NIST National Vulnerability Database
• Source status changed · → Modified
  Oct 14, 2026 · NIST National Vulnerability Database
• Record created in this database
  Oct 14, 2026 · Alertas do Telegram
• 2020
• CVE published
  Apr 9, 2020 · mitre

Source activity

Repeated readings are counted rather than listed.

• 2× References added · Oct 14, 2026 – Oct 14, 2026
• 1× Official description updated · Oct 14, 2026 – Oct 14, 2026

References

18 on the record

• www3.sqlite.org/cgi/src/tktview
  Exploit, Vendor Advisory, x_refsource_MISC, NIST National Vulnerability Database
• www3.sqlite.org/cgi/src/info/4a302b42c7bf5e11
  Patch, Vendor Advisory, x_refsource_MISC, NIST National Vulnerability Database
• cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
  Patch, Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• www.oracle.com/security-alerts/cpujul2020.html
  Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
• security.FreeBSD.org/advisories/FreeBSD-SA-20:22.sqlite.asc
  Third Party Advisory, vendor-advisory, x_refsource_FREEBSD, NIST National Vulnerability Database
• lists.debian.org/debian-lts-announce/2020/08/msg00037.html
  Mailing List, Third Party Advisory, mailing-list, x_refsource_MLIST, NIST National Vulnerability Database
• security.netapp.com/advisory/ntap-20200416-0001/
  Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• nvd.nist.gov/vuln/detail/CVE-2020-11655
  GitHub Security Advisories
• www.oracle.com/security-alerts/cpuApr2021.html
  Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
• usn.ubuntu.com/4394-1/
  Third Party Advisory, vendor-advisory, x_refsource_UBUNTU, NIST National Vulnerability Database
• www.oracle.com/security-alerts/cpujan2021.html
  Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
• github.com/advisories/GHSA-f86q-8q37-c2x4
  GitHub Security Advisories
• security.gentoo.org/glsa/202007-26
  Third Party Advisory, vendor-advisory, x_refsource_GENTOO, NIST National Vulnerability Database
• www.oracle.com/security-alerts/cpuoct2020.html
  Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
• www.tenable.com/security/tns-2021-14
  Release Notes, Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
• cert-portal.siemens.com/productcert/html/ssa-398330.html
  NIST National Vulnerability Database
• cert-portal.siemens.com/productcert/html/ssa-389290.html
  NIST National Vulnerability Database
• lists.debian.org/debian-lts-announce/2020/05/msg00006.html
  Mailing List, Third Party Advisory, mailing-list, x_refsource_MLIST, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• High CVE-2026-70971 Improper Access Control in Oracle Hyperion Infrastructure Technology Aug 18, 2026
• High CVE-2026-70973 Missing Authentication for Critical Function in Oracle Hyperion Infrastructure Technology Aug 18, 2026
• Medium CVE-2026-70972 Improper Access Control in Oracle Hyperion Infrastructure Technology Aug 18, 2026
• Medium CVE-2026-70968 Improper Access Control in Oracle Hyperion Infrastructure Technology Aug 18, 2026
• High CVE-2026-70965 Improper Access Control in Oracle Hyperion Infrastructure Technology Aug 18, 2026
• High CVE-2026-70967 Improper Access Control in Oracle Hyperion Infrastructure Technology Aug 18, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No CISA SSVC assessment.
• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2020-11655 is "SQLite through 3.31.1 allows attackers to cause a denial of service (segmentation fault) via a...", rated High. It affects Ubuntu Linux (Canonical); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.5 describes technical severity. EPSS 4.34% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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