CVE-2021-42917

MEDIUMNVD 5.55.5—Trending — 3 sources updated this week

5.5

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.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 50.2%
KEV: Not listed

Published

November 1, 2021

Last Modified

November 21, 2024

References (10)

cve@mitrehttps://github.com/fuzzard/xbmc/commit/80c8138c09598e88b4ddb6dbb279fa193bbb3237
cve@mitrehttps://github.com/xbmc/xbmc/commit/48730b64494798705d46dfccc4029bd36d072df3
cve@mitrehttps://github.com/xbmc/xbmc/issues/20305
cve@mitrehttps://github.com/xbmc/xbmc/pull/20306
cve@mitrehttps://lists.debian.org/debian-lts-announce/2024/01/msg00009.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/fuzzard/xbmc/commit/80c8138c09598e88b4ddb6dbb279fa193bbb3237
af854a3a-2127-422b-91ae-364da2661108https://github.com/xbmc/xbmc/commit/48730b64494798705d46dfccc4029bd36d072df3
af854a3a-2127-422b-91ae-364da2661108https://github.com/xbmc/xbmc/issues/20305
af854a3a-2127-422b-91ae-364da2661108https://github.com/xbmc/xbmc/pull/20306
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/01/msg00009.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 08:14 UTCEG score recompute
2026-05-26 08:14 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-42917?

CVE-2021-42917 is a medium vulnerability published on November 1, 2021. 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.

When was CVE-2021-42917 disclosed?

CVE-2021-42917 was first published in the National Vulnerability Database on November 1, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-42917 actively exploited?

CVE-2021-42917 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-42917?

CVE-2021-42917 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2021-42917?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-42917, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-42917

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CVE-2021-42917

📅 Published

🔄 Last Modified

🔗 References (10)