GCP-2025-058
Source GCP Compute Engine Security
Not known to be exploited · CVSS 7.2 High.
Data as of 26 Oct 2026, 22:14 UTC
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 21 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| AMDAMD Ryzen™ 9000HX Series Processors | Affected– | Fixed in– |
| AMDAMD EPYC™ 9005 Series Processors | Affected– | Fixed in– |
AI-suggested
The 64-bit RDSEED instruction remains safe and should be used preferentially. Applications should avoid using the 16- and 32-bit RDSEED instructions for cryptographic random number generation. Since the Linux kernel uses the safe 64-bit RDSEED instruction for /dev/[u]random, no action is required for standard Linux systems relying on these sources. Monitor AMD advisories for updates and apply any forthcoming patches or guidance.
Description
A vulnerability has been identified in the RDSEED instruction on AMD Zen 5 (Turin) processors. The 16- and 32-bit versions of the RDSEED instruction can silently fail under certain system load conditions, potentially compromising applications that rely on these instructions for cryptographic random number generation. The 64-bit version of RDSEED is not affected and remains safe. AMD is currently investigating this issue. The 64-bit Linux kernel uses the safe 64-bit RDSEED instruction for /dev/[u]random, so those random numbers are not impacted. Applications that synthesize random numbers using the 16- or 32-bit RDSEED instructions should be aware of this insecurity.