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CVE-2021-28686

18
FAUCET Score

CVE-2021-28686 is a stack-based buffer overflow vulnerability in ASUS GPUTweak II (versions prior to 2.3.0.3) affecting the AsIO2_64.sys and AsIO2_32.sys drivers. This vulnerability allows a low-privileged local user to trigger a Denial of Service (DoS) via a DeviceIoControl call. Rated Medium severity (CVSS 5.5), it has a low attack complexity and requires local access, but does not impact confidentiality or integrity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.3.0.3CPE matchmatch criteria
cpe:2.3:a:asus:gputweak_ii:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
0.25%
Probability of exploitation in next 30 days
EPSS Percentile
16.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0025 is in the 69th percentile among its peer group of 15,940 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

Remediation records are not available for this CVE.

References

gist.github.com / DStraghkov/fba4994ac4bb3a6e2940b21743563df0
Third Party Advisory
asus.com / Static_WebPage/ASUS-Product-Security-Advisory
Vendor Advisory