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CVE-2021-36979

21
FAUCET Score

CVE-2021-36979 describes an out-of-bounds write vulnerability in Unicorn Engine 1.0.2, specifically within the tb_flush_armeb function, affecting Fedora and Unicorn Engine products. This medium-severity flaw (CVSS 5.5) has a local attack vector with low complexity, requiring user interaction, and primarily impacts availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.2CPE matchmatch criteria
cpe:2.3:a:unicorn-engine:unicorn_engine:1.0.2:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
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
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 64th percentile among its peer group of 5,760 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

bugs.chromium.org / p/oss-fuzz/issues/detail
Issue TrackingPatchThird Party Advisory
github.com / google/oss-fuzz-vulns/blob/main/vulns/unicorn/OSV-2020-2305.yaml
Third Party Advisory
github.com / unicorn-engine/unicorn/commit/bf1713d9e011b55ca1f502a6779fc4722b4bb077
PatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MZ6LOCJXHQVU6SCJLFDJINBOVJYYENLX