Vulnerability · Published Sep 15, 2025 · Assigned by NCSC.ch
CVE-2025-6202Phoenix: Rowhammer attack on Hynix DDR5 devices
High 7.1
In plain English
A high-severity security flaw in DDR5 from SK Hynix. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.3%top 73.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC
Official description
Vulnerability in SK Hynix DDR5 on x86 allows a local attacker to trigger Rowhammer bit flips impacting the Hardware Integrity and the system's security. This issue affects DDR5: DIMMs produced from 2021-1 until 2024-12.
Affected products (as reported)
Weakness: CWE-404 · Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H