# CVE-2026-45784

## Summary

- **CVE ID:** CVE-2026-45784
- **Severity:** MEDIUM
- **CVSS Score:** 5.1 (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-131, CWE-787
- **Published:** Jul 17, 2026
- **Last Modified:** Jul 20, 2026

## Description

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.50 until 0.10.80, CipherCtxRef::cipher_update_inplace in openssl/src/cipher_ctx.rs incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers EVP_aes_{128,192,256}_wrap_pad. For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This issue is fixed in version 0.10.80.

## Affected Products

- rust-openssl — rust-openssl (>= 0.10.50, < 0.10.80)

## References

- [CNA](https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-phqj-4mhp-q6mq)
- [CNA](https://github.com/rust-openssl/rust-openssl/pull/2638)
- [CNA](https://github.com/rust-openssl/rust-openssl/commit/19eceb26f2404aae187e5444e65c404ebc1348a7)
- [CNA](https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.80)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 3.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._