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CVE-2025-2884 is an out-of-bounds read vulnerability in the Trusted Computing Group TPM 2.0 reference implementation, specifically in the CryptHmacSign helper function. The flaw is caused by missing validation that the selected signature scheme is compatible with the signature key's algorithm. When this mismatch is not rejected, the TPM code path can read memory beyond intended bounds. The issue affects TPM 2.0 reference implementation contexts prior to the corrections reflected in TPM 2.0 Library Specification Errata revision 1.83 and has been propagated into downstream TPM implementations and products derived from the reference code. The vulnerability can expose sensitive TPM-resident data and may also destabilize or halt TPM functionality.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in the TCG TPM 2.0 specification implementation of CryptHmacSign that allows out-of-bounds memory reads and exposure of sensitive information.
Out-of-bounds read in the TCG TPM 2.0 reference implementation (CryptHmacSign helper) that can cause information disclosure or denial of service.
A publicly disclosed vulnerability affecting TPM 2.0 (as described in the article).
Out-of-bounds read in the TPM2.0 reference implementation (CryptHmacSign helper) that could enable secret theft; publicly known per the content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.