Failure to initialize memory in SEV Firmware may allow a privileged attacker to access stale data from other guests.
Noroxi assessment
Priority: Monitor (action score 24/100)
- Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.30% (FIRST EPSS).
- Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: iwl100-firmware (AlmaLinux:8) 39.31.5.1-122.el8_10.1; iwl1000-firmware (AlmaLinux:8) 1:39.31.5.1-122.el8_10.1; iwl105-firmware (AlmaLinux:8) 18.168.6.1-122.el8_10.1.
Low priority for now. Upgrade to iwl100-firmware (AlmaLinux:8) 39.31.5.1-122.el8_10.1; iwl1000-firmware (AlmaLinux:8) 1:39.31.5.1-122.el8_10.1; iwl105-firmware (AlmaLinux:8) 18.168.6.1-122.el8_10.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Failure to initialize memory in SEV Firmware may allow a privileged attacker to access stale data from other guests.
- Published
- Feb 13, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 22th percentile
- CWE
- CWE-284
Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 24 / 40 · 6.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| amd | epyc 7773x firmware | cpe:2.3:o:amd:epyc_7773x_firmware |
| amd | epyc 7773x | cpe:2.3:h:amd:epyc_7773x |
| amd | epyc 7763 firmware | cpe:2.3:o:amd:epyc_7763_firmware |
| amd | epyc 7763 | cpe:2.3:h:amd:epyc_7763 |
| amd | epyc 7713 firmware | cpe:2.3:o:amd:epyc_7713_firmware |
| amd | epyc 7713 | cpe:2.3:h:amd:epyc_7713 |
| amd | epyc 7713p firmware | cpe:2.3:o:amd:epyc_7713p_firmware |
| amd | epyc 7713p | cpe:2.3:h:amd:epyc_7713p |
| amd | epyc 7663 firmware | cpe:2.3:o:amd:epyc_7663_firmware |
| amd | epyc 7663 | cpe:2.3:h:amd:epyc_7663 |
| amd | epyc 7663p firmware | cpe:2.3:o:amd:epyc_7663p_firmware |
| amd | epyc 7663p | cpe:2.3:h:amd:epyc_7663p |
and 111 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- amd epyc 7203 firmwarebefore milanpi_1.0.0.c
- amd epyc 7203p firmwarebefore milanpi_1.0.0.c
- amd epyc 72f3 firmwarebefore milanpi_1.0.0.c
- amd epyc 7303 firmwarebefore milanpi_1.0.0.c
- amd epyc 7303p firmwarebefore milanpi_1.0.0.c
- amd epyc 7313 firmwarebefore milanpi_1.0.0.c
- amd epyc 7313p firmwarebefore milanpi_1.0.0.c
- amd epyc 7343 firmwarebefore milanpi_1.0.0.c
- amd epyc 7373x firmwarebefore milanpi_1.0.0.c
- amd epyc 73f3 firmwarebefore milanpi_1.0.0.c
- amd epyc 7413 firmwarebefore milanpi_1.0.0.c
- amd epyc 7443 firmwarebefore milanpi_1.0.0.c
- amd epyc 7443p firmwarebefore milanpi_1.0.0.c
- amd epyc 7453 firmwarebefore milanpi_1.0.0.c
- amd epyc 7473x firmwarebefore milanpi_1.0.0.c
- amd epyc 74f3 firmwarebefore milanpi_1.0.0.c
- amd epyc 7513 firmwarebefore milanpi_1.0.0.c
- amd epyc 7543 firmwarebefore milanpi_1.0.0.c
- amd epyc 7543p firmwarebefore milanpi_1.0.0.c
- amd epyc 7573x firmwarebefore milanpi_1.0.0.c
Versions reported by the vendor
Affected version ranges reported by the assigning authority (AMD). Independent of NVD's CPE analysis and usually ahead of it.
AMD 3rd Gen AMD EPYC™ Processors
- variousaffected
AMD 4th Gen AMD EPYC™ Processors
- variousaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | iwl100-firmware | before 39.31.5.1-122.el8_10.1 | 39.31.5.1-122.el8_10.1 |
| AlmaLinux:8 | iwl1000-firmware | before 1:39.31.5.1-122.el8_10.1 | 1:39.31.5.1-122.el8_10.1 |
| AlmaLinux:8 | iwl105-firmware | before 18.168.6.1-122.el8_10.1 | 18.168.6.1-122.el8_10.1 |
| AlmaLinux:8 | iwl135-firmware | before 18.168.6.1-122.el8_10.1 | 18.168.6.1-122.el8_10.1 |
| AlmaLinux:8 | iwl2000-firmware | before 18.168.6.1-122.el8_10.1 | 18.168.6.1-122.el8_10.1 |
| AlmaLinux:8 | iwl2030-firmware | before 18.168.6.1-122.el8_10.1 | 18.168.6.1-122.el8_10.1 |
| AlmaLinux:8 | iwl3160-firmware | before 1:25.30.13.0-122.el8_10.1 | 1:25.30.13.0-122.el8_10.1 |
| AlmaLinux:8 | iwl3945-firmware | before 15.32.2.9-122.el8_10.1 | 15.32.2.9-122.el8_10.1 |
| AlmaLinux:8 | iwl4965-firmware | before 228.61.2.24-122.el8_10.1 | 228.61.2.24-122.el8_10.1 |
| AlmaLinux:8 | iwl5000-firmware | before 8.83.5.1_1-122.el8_10.1 | 8.83.5.1_1-122.el8_10.1 |
| AlmaLinux:8 | iwl5150-firmware | before 8.24.2.2-122.el8_10.1 | 8.24.2.2-122.el8_10.1 |
| AlmaLinux:8 | iwl6000-firmware | before 9.221.4.1-122.el8_10.1 | 9.221.4.1-122.el8_10.1 |
| AlmaLinux:8 | iwl6000g2a-firmware | before 18.168.6.1-122.el8_10.1 | 18.168.6.1-122.el8_10.1 |
| AlmaLinux:8 | iwl6000g2b-firmware | before 18.168.6.1-122.el8_10.1 | 18.168.6.1-122.el8_10.1 |
| AlmaLinux:8 | iwl6050-firmware | before 41.28.5.1-122.el8_10.1 | 41.28.5.1-122.el8_10.1 |
| AlmaLinux:8 | iwl7260-firmware | before 1:25.30.13.0-122.el8_10.1 | 1:25.30.13.0-122.el8_10.1 |
| AlmaLinux:8 | libertas-sd8686-firmware | before 20240610-122.git90df68d2.el8_10 | 20240610-122.git90df68d2.el8_10 |
| AlmaLinux:8 | libertas-sd8787-firmware | before 20240610-122.git90df68d2.el8_10 | 20240610-122.git90df68d2.el8_10 |
| AlmaLinux:8 | libertas-usb8388-firmware | before 2:20240610-122.git90df68d2.el8_10 | 2:20240610-122.git90df68d2.el8_10 |
| AlmaLinux:8 | libertas-usb8388-olpc-firmware | before 20240610-122.git90df68d2.el8_10 | 20240610-122.git90df68d2.el8_10 |
| AlmaLinux:8 | linux-firmware | before 20240610-122.git90df68d2.el8_10 | 20240610-122.git90df68d2.el8_10 |
| AlmaLinux:9 | iwl100-firmware | before 39.31.5.1-143.1.el9_4 | 39.31.5.1-143.1.el9_4 |
| AlmaLinux:9 | iwl1000-firmware | before 1:39.31.5.1-143.1.el9_4 | 1:39.31.5.1-143.1.el9_4 |
| AlmaLinux:9 | iwl105-firmware | before 18.168.6.1-143.1.el9_4 | 18.168.6.1-143.1.el9_4 |
+96
Same product
amd: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-26371A compromised or malicious ABL or UApp could
send a SHA256 system call to the bootloader, which may result in exposure of
ASP memory to user22Monitor
- CVE-2021-26354Insufficient bounds checking in ASP may allow an
attacker to issue a system call from a compromised ABL which may cause
arbitrary memory val22Monitor
- CVE-2023-31347Due to a code bug in
Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a
guest to observe an incorrect TSC when S19Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:iwl100-firmware | 39.31.5.1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl1000-firmware | 1:39.31.5.1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl105-firmware | 18.168.6.1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl135-firmware | 18.168.6.1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl2000-firmware | 18.168.6.1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl2030-firmware | 18.168.6.1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl3160-firmware | 1:25.30.13.0-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl3945-firmware | 15.32.2.9-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl4965-firmware | 228.61.2.24-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl5000-firmware | 8.83.5.1_1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl5150-firmware | 8.24.2.2-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:iwl6000-firmware | 9.221.4.1-122.el8_10.1 · AlmaLinux:8 | Package registry (OSV) |
| red hat:iwl100-firmware | 0:39.31.5.1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl1000-firmware | 1:39.31.5.1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl105-firmware | 0:18.168.6.1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl135-firmware | 0:18.168.6.1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl2000-firmware | 0:18.168.6.1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl2030-firmware | 0:18.168.6.1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl3160-firmware | 1:25.30.13.0-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl3945-firmware | 0:15.32.2.9-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl4965-firmware | 0:228.61.2.24-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl5000-firmware | 0:8.83.5.1_1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl5150-firmware | 0:8.24.2.2-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| red hat:iwl6000-firmware | 0:9.221.4.1-122.el8_10.1 · Red Hat:enterprise_linux:8::baseos | Package registry (OSV) |
| rocky linux:linux-firmware | 0:20240610-122.git90df68d2.el8_10 · Rocky Linux:8 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:1 | 2023-09-03 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-164 d
- Published
- TodayOct 18, 2026+978 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.