CVE-2016-10931

unknown

Published 2016-11-05 · Modified 2026-02-04

CVSS v3

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CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2

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VIR risk

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Description

An 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 verification is off by default and there is no API for hostname verification.

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2016-10931

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`0`
debian	bullseye	fixed	`0`
debian	forky	fixed	`0`
debian	sid	fixed	`0`
debian	trixie	fixed	`0`

Package impact

Ecosystem	Package	Vulnerable	Fixed
crates.io	openssl
crates.io	openssl	`<0.9.0`	`0.9.0`
crates.io	openssl	`>=0.0.0-0,<0.9.0`	`0.9.0`

References

https://github.com/sfackler/rust-openssl/releases/tag/v0.9.0
https://nvd.nist.gov/vuln/detail/CVE-2016-10931
https://github.com/sfackler/rust-openssl
https://rustsec.org/advisories/RUSTSEC-2016-0001.html
https://crates.io/crates/openssl
https://security-tracker.debian.org/tracker/CVE-2016-10931

Verify integrity in audit chain (admin only). AS-IS.