How severe is CVE-2020-25463?

CVE-2020-25463 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-2020-25463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25463?

CVE-2020-25463 affects Moddable. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25463?

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-2020-25463 published?

CVE-2020-25463 was published on 2020-12-04 and last updated on 2026-06-17.

CVE-2020-25463

CVE-2020-25463 is a high-severity vulnerability in Moddable 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Moddable
Published: 2020-12-04
Last modified: 2026-06-17

Description

Invalid Memory Access in fxUTF8Decode at moddable/xs/sources/xsCommon.c:916 in Moddable SDK before OS200908 causes a denial of service (SEGV).

Frequently asked questions

What is CVE-2020-25463?: Invalid Memory Access in fxUTF8Decode at moddable/xs/sources/xsCommon.c:916 in Moddable SDK before OS200908 causes a denial of service (SEGV).
How severe is CVE-2020-25463?: CVE-2020-25463 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-2020-25463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25463?: CVE-2020-25463 affects Moddable. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25463?: 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-2020-25463 published?: CVE-2020-25463 was published on 2020-12-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:moddable:moddable:*:*:*:*:*:*:*:*

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