How severe is CVE-2019-9937?

CVE-2019-9937 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-9937 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9937?

CVE-2019-9937 affects Sqlite. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9937?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-9937 published?

CVE-2019-9937 was published on 2019-03-22 and last updated on 2026-06-17.

CVE-2019-9937

CVE-2019-9937 is a high-severity vulnerability in Sqlite with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Sqlite
Published: 2019-03-22
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2019-9937?: CVE-2019-9937 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-9937 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9937?: CVE-2019-9937 affects Sqlite. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9937?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-9937 published?: CVE-2019-9937 was published on 2019-03-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sqlite:sqlite:3.27.2:*:*:*:*:*:*:*

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