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CVE-2021-43814

25
FAUCET Score

CVE-2021-43814 is a heap-based out-of-bounds write vulnerability in Rizin versions up to and including 0.3.1, affecting its ability to parse AMD64 ELF binaries with DWARF debug information. This flaw can lead to crashes or unintended actions when a victim user opens a malicious binary. With a CVSS score of 7.8 (High), it requires local access and user interaction (opening a malicious file) but can result in high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.3.1CPE matchmatch criteria
cpe:2.3:a:rizin:rizin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.7HIGH

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.3%
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 51st percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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 / rizinorg/rizin/commit/aa6917772d2f32e5a7daab25a46c72df0b5ea406
PatchThird Party Advisory
github.com / rizinorg/rizin/issues/2083
Third Party Advisory
github.com / rizinorg/rizin/security/advisories/GHSA-hqqp-vjcm-mw8r
Third Party Advisory