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CVE-2021-22550

24
FAUCET Score

CVE-2021-22550 is a high-severity vulnerability affecting Google Asylo, allowing an attacker to modify pointers within enclave memory to overwrite arbitrary memory addresses inside the secure enclave. With a CVSS score of 7.8, this local attack requires low privileges and no user interaction, leading to high impacts on confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are available, and there's no evidence of active exploitation, the vulnerability has received minimal community discussion or media coverage. Organizations are advised to update Asylo to a version past 0.6.3 or apply the specified git commit to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.6.1CPE match
cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*
< 0.6.3CPE matchmatch criteria
cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
1.0
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.10%
Probability of exploitation in next 30 days
EPSS Percentile
1.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0010 is in the 5th percentile among its peer group of 17,070 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

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / google/asylo/commit/a47ef55db2337d29de19c50cd29b0deb2871d31c
PatchThird Party Advisory