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Findings

Vulnerability · RUSTSEC-2026-0336

MIKEY message MAC is never verified on receive, so forged messages are accepted

Published Oct 9, 2026 · RustSec Rust · evidence confidence high

implements MIKEY (RFC 3830) for SRTP key exchange. No receive path verified the MIKEY message authentication code. existed and was correct, but it was called only from unit tests — neither nor invoked it. computed an HMAC-SHA-1-160 over the serialized message and appended it, so the tag was present on the wire and looked like integrity protection. It was decorative: a receiver accepted any message regardless of whether the MAC was correct, wrong, or absent. ## Consequences - An attacker able to inject or modify MIKEY messages in transit faced no integrity check. Modified RAND, SSRC or security

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

RUSTSEC-2026-0336 is a unknown public vulnerability record for RustSec Rust. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether RustSec Rust is in your estate, then compare installed versions with the affected ranges. Affected version ranges have not been ingested yet. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: no CVSS/EPSS yet. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: rustsec. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 9, 2026 · RustSec Advisory DB

    Detected

    implements MIKEY (RFC 3830) for SRTP key exchange. No receive path verified the MIKEY message authentication code. existed and was correct, but it was called only from unit tests — neither nor invoked it. computed an HMAC-SHA-1-160 over the serialized message and appended it, so the tag was present on the wire and looked like integrity protection. It was decorative: a receiver accepted any message

Sources

  • RustSec Advisory DBVendor advisoryRUSTSEC-2026-0336

    implements MIKEY (RFC 3830) for SRTP key exchange. No receive path verified the MIKEY message authentication code. existed and was correct, but it was called only from unit tests — neither nor invoked it. computed an HMAC-SHA-1-160 over the serialized message and appended it, so

    crates.io