A randomly generated Initialization Vector (IV) may lead to a collision of IVs with the…
Priority LOW 24CWE-330Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
A randomly generated Initialization Vector (IV) may lead to a collision of IVs with the same key potentially resulting in information disclosure.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0019 8th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AMD | 2nd Gen EPYC | various | — | No fix listed | CNA |
- 2nd Gen EPYC VendorAMD Affected various Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-26407
- 2026-10-03 Alias added: GHSA-wvcg-5hx9-98xw
References
More AMD Romepi Firmware vulnerabilities
- TI-2023-06994 Improper input validation in AMD 2nd Gen EPYC CVSS 3.1HIGH 7.5
- TI-2021-21492 Out-of-bounds write in AMD 1st Gen EPYC CVSS 3.1HIGH 7.1
- TI-2022-07833 Memory corruption in AMD 2nd Gen EPYC CVSS 3.1MEDIUM 5.3
- TI-2021-21483 Improper input validation in AMD 2nd Gen EPYC CVSS 3.1MEDIUM 6.1
- TI-2021-21484 Out-of-bounds read in AMD 2nd Gen EPYC CVSS 3.1MEDIUM 5.5
Sources
- CVE-2021-26407 · CVE Program
- CVE-2021-26407 · NVD
- FIRST EPSS
- GHSA-wvcg-5hx9-98xw · GitHub Advisory Database · CC BY 4.0
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