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CVE-2026-34875 is a buffer overflow vulnerability in public-key export for finite-field Diffie-Hellman (FFDH) keys. It affects Mbed TLS through version 3.6.5 and TF-PSA-Crypto 1.0.0. The affected export operation can overflow a buffer; the precise triggering input, vulnerable function, and resulting exploitation capabilities are not established.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A buffer overflow in public key export for FFDH keys affects Mbed TLS through version 3.6.5 and TF-PSA-Crypto 1.0.0. The plugin rates the vulnerability critical, with a CVSS v3 base score of 9.8. Updating mbedtls and related packages to version 3.6.6 or later is the recommended fix.
A buffer overflow vulnerability in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0 affecting public key export for FFDH keys.
A vulnerability listed as fixed by updating Mbed TLS to version 3.6.6 in OpenWrt 24.10.7.
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.