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CVE-2023-42800

22
FAUCET Score

CVE-2023-42800 is a buffer overflow vulnerability in Moonlight-common-c, affecting various Moonlight client applications. This flaw, stemming from unmitigated unsafe C functions and improper bounds checking, allows a malicious game streaming server to crash a client or potentially achieve remote code execution. With a CVSS score of 8.8 (High), it presents a significant risk due to its network-based attack vector and low attack complexity. While there is no evidence of active exploitation, public exploit code, or significant community discussion, the potential for severe impact necessitates prompt patching.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2022-11-04, < 2023-10-06CPE matchmatch criteria
cpe:2.3:a:moonlight-stream:moonlight-common-c:*:*:*:*:*:*:*:*
>= 8.4.0, <= 8.5.0CPE matchmatch criteria
cpe:2.3:a:moonlight-stream:moonlight:*:*:*:*:*:iphone_os:*:*
>= 8.4.0, <= 8.5.0CPE matchmatch criteria
cpe:2.3:a:moonlight-stream:moonlight:*:*:*:*:*:tvos:*:*
>= 10.10, <= 11.0CPE matchmatch criteria
cpe:2.3:a:moonlight-stream:moonlight:*:*:*:*:*:android:*:*
0.10.22CPE matchmatch criteria
cpe:2.3:a:moonlight-stream:moonlight:0.10.22:*:*:*:*:chrome:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.66%
Probability of exploitation in next 30 days
EPSS Percentile
74.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0166 is in the 73rd percentile among its peer group of 14,824 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / moonlight-stream/moonlight-common-c/blob/2bb026c763fc18807d7e4a93f918054c488f84e1/src/RtspConnection.c
Product
github.com / moonlight-stream/moonlight-common-c/commit/24750d4b748fefa03d09fcfd6d45056faca354e0
Patch
github.com / moonlight-stream/moonlight-common-c/commit/50c0a51b10ecc5b3415ea78c21d96d679e2288f9
Patch
github.com / moonlight-stream/moonlight-common-c/security/advisories/GHSA-4927-23jw-rq62
ExploitThird Party Advisory