How severe is CVE-2018-6191?

CVE-2018-6191 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-2018-6191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6191?

CVE-2018-6191 affects Artifex Mujs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6191?

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

When was CVE-2018-6191 published?

CVE-2018-6191 was published on 2018-01-24 and last updated on 2026-06-17.

CVE-2018-6191

CVE-2018-6191 is a medium-severity vulnerability in Artifex Mujs 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-190.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Artifex Mujs
Published: 2018-01-24
Last modified: 2026-06-17

Description

The js_strtod function in jsdtoa.c in Artifex MuJS through 1.0.2 has an integer overflow because of incorrect exponent validation.

Frequently asked questions

What is CVE-2018-6191?: The js_strtod function in jsdtoa.c in Artifex MuJS through 1.0.2 has an integer overflow because of incorrect exponent validation.
How severe is CVE-2018-6191?: CVE-2018-6191 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-2018-6191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6191?: CVE-2018-6191 affects Artifex Mujs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6191?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6191 published?: CVE-2018-6191 was published on 2018-01-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:artifex:mujs:*:*:*:*:*:*:*:*

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Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

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