rust-openssl up to 0.10.79 Cipher Context cipher_ctx.rs cipher_update_inplace plaintext heap-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in rust-openssl up to 0.10.79. Affected by this vulnerability is the function cipher_update_inplace of the file openssl/src/cipher_ctx.rs of the component Cipher Context. The manipulation of the argument plaintext results in heap-based overflow. This vulnerability is reported as CVE-2026-45784. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in rust-openssl up to 0.10.79. Affected is the function cipher_update_inplace of the file openssl/src/cipher_ctx.rs of the component Cipher Context. The manipulation of the argument plaintext with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-45784 since 05/13/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/17/2026).

Upgrading to version 0.10.80 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Network Encryption Software

Name

• rust-openssl

Version

• 0.10.0
• 0.10.1
• 0.10.2
• 0.10.3
• 0.10.4
• 0.10.5
• 0.10.6
• 0.10.7
• 0.10.8
• 0.10.9
• 0.10.10
• 0.10.11
• 0.10.12
• 0.10.13
• 0.10.14
• 0.10.15
• 0.10.16
• 0.10.17
• 0.10.18
• 0.10.19
• 0.10.20
• 0.10.21
• 0.10.22
• 0.10.23
• 0.10.24
• 0.10.25
• 0.10.26
• 0.10.27
• 0.10.28
• 0.10.29
• 0.10.30
• 0.10.31
• 0.10.32
• 0.10.33
• 0.10.34
• 0.10.35
• 0.10.36
• 0.10.37
• 0.10.38
• 0.10.39
• 0.10.40
• 0.10.41
• 0.10.42
• 0.10.43
• 0.10.44
• 0.10.45
• 0.10.46
• 0.10.47
• 0.10.48
• 0.10.49
• 0.10.50
• 0.10.51
• 0.10.52
• 0.10.53
• 0.10.54
• 0.10.55
• 0.10.56
• 0.10.57
• 0.10.58
• 0.10.59
• 0.10.60
• 0.10.61
• 0.10.62
• 0.10.63
• 0.10.64
• 0.10.65
• 0.10.66
• 0.10.67
• 0.10.68
• 0.10.69
• 0.10.70
• 0.10.71
• 0.10.72
• 0.10.73
• 0.10.74
• 0.10.75
• 0.10.76
• 0.10.77
• 0.10.78
• 0.10.79

Support

• end of life (old version)

Website

• Product: https://github.com/rust-openssl/rust-openssl/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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