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CVE-2026-41681

27
FAUCET Score

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.39 to before 0.10.78, EVP_DigestFinal() always writes EVP_MD_CTX_size(ctx) to the out buffer. If out is smaller than that, MdCtxRef::digest_final() writes past its end, usually corrupting the stack. This is reachable from safe Rust. This vulnerability is fixed in 0.10.78.

First published: Apr 24, 2026Last modified: Apr 24, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.10.39, < 0.10.78CPE matchmatch criteria
cpe:2.3:a:rust-openssl_project:rust-openssl:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 4.0

8.1HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
UNREPORTED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 9th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

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 (2)

github_advisorypatch availablevia nvd_reference
View patch
rustpatch availablevia ghsa
Product: opensslFixed in: 0.10.78

Vendor Advisories (2)

rustGHSA-ghm9-cr32-g9qjhigh

rust-openssl: rustMdCtxRef::digest_final() writes past caller buffer with no length check

Apr 22, 2026
microsoft2026-Apr/CVE-2026-41681Important

rust-openssl: MdCtxRef::digest_final() writes past caller buffer with no length check

Apr 14, 2026

References

github.com / rust-openssl/rust-openssl/commit/826c3888b77add418b394770e2b2e3a72d9f92fe
Patch
github.com / rust-openssl/rust-openssl/pull/2608
Issue Tracking
github.com / rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78
Release Notes
github.com / rust-openssl/rust-openssl/security/advisories/GHSA-ghm9-cr32-g9qj
Vendor Advisory