CVE-2019-9937

In SQLite 3.27.2, interleaving reads and writes in a single transaction with an fts5 virtual table will lead to a NULL Pointer Dereference in fts5ChunkIterate in sqlite3.c. This is related to ext/fts5/fts5_hash.c and ext/fts5/fts5_index.c.

Published: 2019-03-22 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-9937 is rated Moderate Risk (64.5/100): CVSS High severity, with high exploitation likelihood (EPSS 6.25%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.06% over the last day, indicating growing attacker interest. 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-2019-9937

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 2026-06-15 4.20% 6.25% +2.06%
2 2026-04-27 4.00% 4.20% +0.19%
3 2026-01-29 — 4.00% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-9937

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-9937

OS Trackers for CVE-2019-9937

vendor priority summary link
debian low CVE-2019-9937 low 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-2019-9937
gentoo high CVE-2019-9937: 1 GLSA(s) (201908-09), 1 atom(s) (dev-db/sqlite); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-9937
redhat low — https://access.redhat.com/security/cve/CVE-2019-9937
suse low CVE-2019-9937 severity low: SUSE including 413 source package names (0.1.0:libsqlite3-0-3.28.0-3.6.1, 0.1.75:libsqlite3-0-3.28.0-3.6.1, …), 1018 product×package rows across 530 product lines (Container bci/bci-init, Container bci/bci-sle15-kernel-module-devel, … (530 product lines)): Fixed 699, Known Not Affected 162, Known Affected 157. https://www.suse.com/security/cve/CVE-2019-9937/
ubuntu low CVE-2019-9937 low priority: Ubuntu including 1 source packages (sqlite3), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 4, not-affected 2. https://ubuntu.com/security/CVE-2019-9937

Affected software / configurations for CVE-2019-9937

Vendor Product Version Raw CPE
sqlite sqlite 3.27.2 cpe:2.3:a:sqlite:sqlite:3.27.2:*:*:*:*:*:*:*

References for CVE-2019-9937

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00026.html
http://www.securityfocus.com/bid/107562 Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2020/08/msg00037.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXD2GYJVTDGEQPUNMMMC5TB7MQXOBBMO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N66U5PY5UJU4XBFZJH7QNKIDNAVIB4OP/
https://security.gentoo.org/glsa/201908-09
https://security.netapp.com/advisory/ntap-20190416-0005/ Third Party Advisory
https://sqlite.org/src/info/45c73deb440496e8 Patch Vendor Advisory
https://usn.ubuntu.com/4019-1/
https://www.mail-archive.com/sqlite-users%40mailinglists.sqlite.org/msg114383.html
https://www.mail-archive.com/sqlite-users%40mailinglists.sqlite.org/msg114393.html
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
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