← Vulnerability feed

Vulnerability record · CVE-2026-41678 · published 24 April 2026

CVE-2026-41678: Rust-openssl project rust-openssl out-of-bounds write vulnerability

RRust Openssl Project · Rust Openssl

rust-openssl provides OpenSSL bindings for the Rust programming language. From to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: it checks that out.len() + 8 <= in_.len(), but this condition is reversed. The intended invariant is out.len() >= in_.len() - 8, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of out by in_.len() - 8 - out.len() bytes, causing an out-of-bounds write from a safe public function. This vulnerability is fixed in 0.10.78.

7.2 CVSS 4.0 High EPSS 0.25% · top 85.2% CWE-787 · Out-of-bounds write
7.2CVSS 4.0 base score
0.25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jul 2026Last modified by NVD

Description

rust-openssl provides OpenSSL bindings for the Rust programming language. From to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: it checks that out.len() + 8 <= in_.len(), but this condition is reversed. The intended invariant is out.len() >= in_.len() - 8, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of out by in_.len() - 8 - out.len() bytes, causing an out-of-bounds write from a safe public function. This vulnerability is fixed in 0.10.78.

CVSS:4.0/AV:N/AC:L/AT:P/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-8c75-8mhr-p7r9 Vendor Advisory

Track CVE-2026-41678 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-20997Rust-openssl project rust-openssl use after free vulnerabilityAn issue was discovered in the openssl crate before 0.10.9 for Rust. A use-after-free occurs in CMS Signing.EPSS 1.7%8.3CVE-2026-41898Rust-openssl project rust-openssl vulnerabilityrust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.24 to before 0.10.78, the FFI trampolines behind SslContextBuilder…EPSS 0.28%8.1CVE-2026-41681Rust-openssl project rust-openssl stack-based buffer overflow vulnerabilityrust-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_…EPSS 0.36%8.1CVE-2016-10931Rust-openssl project rust-openssl improper certificate validation vulnerabilityAn issue was discovered in the openssl crate before 0.9.0 for Rust. There is an SSL/TLS man-in-the-middle vulnerability because certificate verificat…EPSS 0.75%7.2CVE-2026-41676Rust-openssl project rust-openssl out-of-bounds write vulnerabilityrust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.27 to before 0.10.78, Deriver::derive (and PkeyCtxRef::derive) set…EPSS 0.29%1.7CVE-2026-41677Rust-openssl project rust-openssl out-of-bounds read vulnerabilityrust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate…EPSS 0.29%8.8CVE-2026-53266Linux kernel ebtables SNAT out-of-bounds write in ARP rewriteThe ebtables SNAT target rewrites the ARP sender hardware address via skb_store_bits() without first making that range writable. When the ARP SHA byt…KEVEPSS 0.65%analysed8.8CVE-2026-87491Google Chrome V8 out-of-bounds write enables sandbox code executionChrome before 153.0.8010.36 contains an out-of-bounds write in the V8 JavaScript engine. A crafted HTML page can trigger the memory corruption, and b…KEVEPSS 3.1%analysed

Source: NIST National Vulnerability Database (record CVE-2026-41678), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.