How severe is CVE-2022-31783?

CVE-2022-31783 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-31783 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-31783?

CVE-2022-31783 primarily affects Liblouis. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-31783?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-31783 published?

CVE-2022-31783 was published on 2022-06-02 and last updated on 2026-06-17.

CVE-2022-31783

CVE-2022-31783 is a medium-severity vulnerability in Liblouis with a CVSS 3.x base score of 5.5. 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-787.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Liblouis
Published: 2022-06-02
Last modified: 2026-06-17

Description

Liblouis 3.21.0 has an out-of-bounds write in compileRule in compileTranslationTable.c, as demonstrated by lou_trace.

Frequently asked questions

What is CVE-2022-31783?: Liblouis 3.21.0 has an out-of-bounds write in compileRule in compileTranslationTable.c, as demonstrated by lou_trace.
How severe is CVE-2022-31783?: CVE-2022-31783 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-31783 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-31783?: CVE-2022-31783 primarily affects Liblouis. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-31783?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-31783 published?: CVE-2022-31783 was published on 2022-06-02 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:liblouis:liblouis:3.21.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

More vulnerabilities in Liblouis

CVE-2018-11410 — Critical (CVSS 9.8): An issue was discovered in Liblouis 3.5.0. A invalid free in the compileRule function in compileTranslationTable.c…
CVE-2018-12085 — High (CVSS 8.8): Liblouis 3.6.0 has a stack-based Buffer Overflow in the function parseChars in compileTranslationTable.c, a different…
CVE-2018-11685 — High (CVSS 8.8): Liblouis 3.5.0 has a stack-based Buffer Overflow in the function compileHyphenation in compileTranslationTable.c.
CVE-2018-11684 — High (CVSS 8.8): Liblouis 3.5.0 has a stack-based Buffer Overflow in the function includeFile in compileTranslationTable.c.
CVE-2018-11683 — High (CVSS 8.8): Liblouis 3.5.0 has a stack-based Buffer Overflow in the function parseChars in compileTranslationTable.c, a different…
CVE-2018-11577 — High (CVSS 8.8): Liblouis 3.5.0 has a Segmentation fault in lou_logPrint in logging.c.

All CVEs affecting Liblouis →

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