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01 Record

CVE-2021-24030

The fbgames protocol handler registered as part of Facebook Gameroom does not properly quote arguments passed to the executable. That allows a malicious URL to cause code execution. This issue affects

UnratedPUBLISHEDCNA: facebook
CNA base scoreUnratedNo CNA CVSS vector

02 Description

The fbgames protocol handler registered as part of Facebook Gameroom does not properly quote arguments passed to the executable. That allows a malicious URL to cause code execution. This issue affects

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.75% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 77.5% of scored records. A rank, not a probability.
NVD base score
9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2021-03-10 15:50Z5 YR AGO
Last updated
2024-08-03 19:21Z2 YR AGO
Reserved
2021-01-13
Assigning CNA
facebook
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')Base
Data version
5.1
Document digest
6c4cc30d9f2d411a7d3b76c44b7edc33acd6c2d4ad35e4829139dab9e3b77d96

05 Affected products

VendorProductVersionsPlatforms
FacebookFacebook Gameroom< 1.26.0—

06 References