CVE-2018-6639
CVE-2018-6639 is a critical-severity vulnerability in Wiris Mathtype with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 4% (88th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Wiris Mathtype
- Published:
- Last modified:
Description
An out-of-bounds write (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. A size used by memmove is read from the input file. This is fixed in 6.9d.
Frequently asked questions
- What is CVE-2018-6639?
- An out-of-bounds write (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. A size used by memmove is read from the input file. This is fixed in 6.9d.
- How severe is CVE-2018-6639?
- CVE-2018-6639 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-6639 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-6639?
- CVE-2018-6639 affects Wiris Mathtype. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-6639?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2018-6639 published?
- CVE-2018-6639 was published on 2018-02-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:wiris:mathtype:6.9c:*:*:*:*:*:*:*
More vulnerabilities in Wiris Mathtype
- CVE-2018-6641 — Critical (CVSS 9.8): An Arbitrary Free (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. Crafted input can…
- CVE-2018-6640 — Critical (CVSS 9.8): A Heap Overflow (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. Crafted input can modify…
- CVE-2018-6638 — Critical (CVSS 9.8): A stack-based buffer overflow (Remote Code Execution) issue was discovered in Design Science MathType 6.9c. This occurs…
- CVE-2022-31372 — High (CVSS 7.5): Wiris Mathtype v7.28.0 was discovered to contain a path traversal vulnerability in the resourceFile parameter. This…
All CVEs affecting Wiris Mathtype →
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