How severe is CVE-2021-42917?

CVE-2021-42917 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-2021-42917 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42917?

CVE-2021-42917 affects Kodi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42917?

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

When was CVE-2021-42917 published?

CVE-2021-42917 was published on 2021-11-01 and last updated on 2026-06-17.

CVE-2021-42917

CVE-2021-42917 is a medium-severity vulnerability in Kodi 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Kodi
Published: 2021-11-01
Last modified: 2026-06-17

Description

Buffer overflow vulnerability in Kodi xbmc up to 19.0, allows attackers to cause a denial of service due to improper length of values passed to istream.

Frequently asked questions

What is CVE-2021-42917?: Buffer overflow vulnerability in Kodi xbmc up to 19.0, allows attackers to cause a denial of service due to improper length of values passed to istream.
How severe is CVE-2021-42917?: CVE-2021-42917 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-2021-42917 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42917?: CVE-2021-42917 affects Kodi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42917?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-42917 published?: CVE-2021-42917 was published on 2021-11-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kodi:kodi:*:*:*:*:*:*:*:*

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