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CVE-2021-42917

20
FAUCET Score

CVE-2021-42917 describes a buffer overflow vulnerability in Kodi xbmc versions up to 19.0, allowing attackers to trigger a denial of service by providing improperly long values to istream. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and primarily leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 19.0CPE matchmatch criteria
cpe:2.3:a:kodi:kodi:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.87%
Probability of exploitation in next 30 days
EPSS Percentile
77.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0187 is in the 87th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / fuzzard/xbmc/commit/80c8138c09598e88b4ddb6dbb279fa193bbb3237
PatchThird Party Advisory
github.com / xbmc/xbmc/commit/48730b64494798705d46dfccc4029bd36d072df3
PatchThird Party Advisory
github.com / xbmc/xbmc/issues/20305
ExploitIssue TrackingThird Party Advisory
github.com / xbmc/xbmc/pull/20306
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2024/01/msg00009.html