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CVE-2021-42996

26
FAUCET Score

CVE-2021-42996 is an integer overflow vulnerability affecting Donglify versions above 1.0.12309 and below 1.7.14110. A local attacker can exploit this flaw via a specially crafted I/O Request Packet to the IOCTL Handler 0x22001B. This vulnerability carries a high CVSS score of 8.8, indicating a significant risk of arbitrary code execution in kernel mode or a denial of service due to memory corruption and OS crash. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has received some community discussion and media coverage, including an article from BleepingComputer.

Impacted Technologies

VendorProductVersion(s)CPE
> 1.0.12309, < 1.7.14110CPE matchmatch criteria
cpe:2.3:a:donglify:donglify:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 79th percentile among its peer group of 17,061 CVEs.

Social Chatter

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

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

Remediation

Remediation records are not available for this CVE.

References

sentinelone.com / labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services
ExploitTechnical DescriptionThird Party Advisory