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CVE-2021-32471

25
FAUCET Score

CVE-2021-32471 describes an insufficient input validation vulnerability in the Marvin Minsky 1967 implementation of the Universal Turing Machine, allowing arbitrary code execution through crafted data. With a CVSS score of 7.8 (HIGH), this vulnerability has a local attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its severity, the discoverer states it has no real-world implications, and there is no evidence of active exploitation, public exploit code, or inclusion in the KEV catalog, though it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:mit:universal_turing_machine:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 89th percentile among its peer group of 16,994 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

arxiv.org / abs/2105.02124
Third Party Advisory
github.com / intrinsic-propensity/turing-machine
ExploitThird Party Advisory