Missing System x Flash Memory Write Protection Lock Bit
Priority LOW 24CWE-276Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
A write protection lock bit was left unset after boot on an older generation of Lenovo and IBM System x servers, potentially allowing an attacker with administrator access to modify the subset of flash memory containing Intel Server Platform Services (SPS) and the system Flash Descriptors.
Why it matters now
EPSS 0.00664 51st percentileScored 2026-11-07
Fix Fixed System x UEFI (Lenovo): variesSystem x UEFI (IBM): varies
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Lenovo | System x UEFI | before varies | varies | Patch available | CNA |
| IBM | System x UEFI | before varies | varies | Patch available | CNA |
- System x UEFI VendorLenovo Affected before varies Fixed in varies Patch available CNA
- System x UEFI VendorIBM Affected before varies Fixed in varies Patch available CNA
CPE configurations NVD · 57
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lenovo:flex_system_x240_m4_firmware:*:*:*:*:*:*:*:* | before a3e122b | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:flex_system_x240_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:flex_system_x440_m4_firmware:*:*:*:*:*:*:*:* | before cge122b | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:flex_system_x440_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:lenovo:system_x3750_m4_firmware:*:*:*:*:*:*:*:* | before a5e124b | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:system_x3750_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:o:ibm:bladecenter_hs23_firmware:*:*:*:*:*:*:*:* | before tke160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:bladecenter:hs23:-:*:*:*:*:*:* | hs23 | Running on | IBM |
| cpe:2.3:o:ibm:bladecenter_hs23e_firmware:*:*:*:*:*:*:*:* | before ahe160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:bladecenter:hs23e:-:*:*:*:*:*:* | hs23e | Running on | IBM |
- cpe:2.3:o:lenovo:flex_system_x240_m4_firmware:*:*:*:*:*:*:*:* Versions before a3e122b Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:flex_system_x240_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:flex_system_x440_m4_firmware:*:*:*:*:*:*:*:* Versions before cge122b Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:flex_system_x440_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:lenovo:system_x3750_m4_firmware:*:*:*:*:*:*:*:* Versions before a5e124b Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:system_x3750_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:o:ibm:bladecenter_hs23_firmware:*:*:*:*:*:*:*:* Versions before tke160c Vulnerable ·IBM
- cpe:2.3:h:ibm:bladecenter:hs23:-:*:*:*:*:*:* Versions hs23 Running on ·IBM
- cpe:2.3:o:ibm:bladecenter_hs23e_firmware:*:*:*:*:*:*:*:* Versions before ahe160c Vulnerable ·IBM
- cpe:2.3:h:ibm:bladecenter:hs23e:-:*:*:*:*:*:* Versions hs23e Running on ·IBM
Show 47 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:ibm:flex_system_x220_m4_firmware:*:*:*:*:*:*:*:* | before kse158c | Vulnerable | IBM |
| cpe:2.3:h:ibm:flex_system_x220:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:flex_system_x222_m4_firmware:*:*:*:*:*:*:*:* | before cce160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:flex_system_x222_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:flex_system_x240_m4_firmware:*:*:*:*:*:*:*:* | before ahe160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:flex_system_x240_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:flex_system_x280_x6_firmware:*:*:*:*:*:*:*:* | before n3e132w | Vulnerable | IBM |
| cpe:2.3:h:ibm:flex_system_x280_x6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:flex_system_x440_m4_firmware:*:*:*:*:*:*:*:* | before cne162d | Vulnerable | IBM |
| cpe:2.3:h:ibm:flex_system_x440_m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:flex_system_x480_x6_firmware:*:*:*:*:*:*:*:* | before n3e132w | Vulnerable | IBM |
| cpe:2.3:h:ibm:flex_system_x480_x6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:flex_system_x880_x6_firmware:*:*:*:*:*:*:*:* | before n2e130e | Vulnerable | IBM |
| cpe:2.3:h:ibm:flex_system_x880_x6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:idataplex_dx360_m4_firmware:*:*:*:*:*:*:*:* | before fhe120d | Vulnerable | IBM |
| cpe:2.3:h:ibm:idataplex_dx360_m4_:-:*:*:*:*:*:*:* | not specified by NVD | Running on | IBM |
| cpe:2.3:o:ibm:idataplex_dx360_m4_water_cooled_firmware:*:*:*:*:*:*:*:* | before fhe120d | Vulnerable | IBM |
| cpe:2.3:o:ibm:system_x3100_m4_firmware:*:*:*:*:*:*:*:* | before jqe184c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3100_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3100_m5_firmware:*:*:*:*:*:*:*:* | before j9e134c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3100_m5:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3250_m4_firmware:*:*:*:*:*:*:*:* | before jqe184c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3250_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3250_m5_firmware:*:*:*:*:*:*:*:* | before jue134c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3250_m5:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3300_m4_firmware:*:*:*:*:*:*:*:* | before yae156c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3300_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3500_m4_firmware:*:*:*:*:*:*:*:* | before y5e158c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3500_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3530_m4_firmware:*:*:*:*:*:*:*:* | before bee164c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3530_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3550_m4_firmware:*:*:*:*:*:*:*:* | before d7e166d | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3550_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3630_m4_firmware:*:*:*:*:*:*:*:* | before vve162c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3630_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3650_m4_firmware:*:*:*:*:*:*:*:* | before vve160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3650_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3650_m4_bd_firmware:*:*:*:*:*:*:*:* | before vve160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3650_m4_bd:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3650_m4_hd_firmware:*:*:*:*:*:*:*:* | before vve160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3650_m4_hd:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3750_m4_firmware:*:*:*:*:*:*:*:* | before koe160c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3750_m4:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3850_x6_firmware:*:*:*:*:*:*:*:* | before a8e128c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3850_x6:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
| cpe:2.3:o:ibm:system_x3950_x6_firmware:*:*:*:*:*:*:*:* | before bee164c | Vulnerable | IBM |
| cpe:2.3:h:ibm:system_x3950_x6:*:*:*:*:*:*:*:* | all versions | Running on | IBM |
- cpe:2.3:o:ibm:flex_system_x220_m4_firmware:*:*:*:*:*:*:*:* Versions before kse158c Vulnerable ·IBM
- cpe:2.3:h:ibm:flex_system_x220:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:flex_system_x222_m4_firmware:*:*:*:*:*:*:*:* Versions before cce160c Vulnerable ·IBM
- cpe:2.3:h:ibm:flex_system_x222_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:flex_system_x240_m4_firmware:*:*:*:*:*:*:*:* Versions before ahe160c Vulnerable ·IBM
- cpe:2.3:h:ibm:flex_system_x240_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:flex_system_x280_x6_firmware:*:*:*:*:*:*:*:* Versions before n3e132w Vulnerable ·IBM
- cpe:2.3:h:ibm:flex_system_x280_x6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:flex_system_x440_m4_firmware:*:*:*:*:*:*:*:* Versions before cne162d Vulnerable ·IBM
- cpe:2.3:h:ibm:flex_system_x440_m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:flex_system_x480_x6_firmware:*:*:*:*:*:*:*:* Versions before n3e132w Vulnerable ·IBM
- cpe:2.3:h:ibm:flex_system_x480_x6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:flex_system_x880_x6_firmware:*:*:*:*:*:*:*:* Versions before n2e130e Vulnerable ·IBM
- cpe:2.3:h:ibm:flex_system_x880_x6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:idataplex_dx360_m4_firmware:*:*:*:*:*:*:*:* Versions before fhe120d Vulnerable ·IBM
- cpe:2.3:h:ibm:idataplex_dx360_m4_:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·IBM
- cpe:2.3:o:ibm:idataplex_dx360_m4_water_cooled_firmware:*:*:*:*:*:*:*:* Versions before fhe120d Vulnerable ·IBM
- cpe:2.3:o:ibm:system_x3100_m4_firmware:*:*:*:*:*:*:*:* Versions before jqe184c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3100_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3100_m5_firmware:*:*:*:*:*:*:*:* Versions before j9e134c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3100_m5:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3250_m4_firmware:*:*:*:*:*:*:*:* Versions before jqe184c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3250_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3250_m5_firmware:*:*:*:*:*:*:*:* Versions before jue134c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3250_m5:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3300_m4_firmware:*:*:*:*:*:*:*:* Versions before yae156c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3300_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3500_m4_firmware:*:*:*:*:*:*:*:* Versions before y5e158c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3500_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3530_m4_firmware:*:*:*:*:*:*:*:* Versions before bee164c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3530_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3550_m4_firmware:*:*:*:*:*:*:*:* Versions before d7e166d Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3550_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3630_m4_firmware:*:*:*:*:*:*:*:* Versions before vve162c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3630_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3650_m4_firmware:*:*:*:*:*:*:*:* Versions before vve160c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3650_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3650_m4_bd_firmware:*:*:*:*:*:*:*:* Versions before vve160c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3650_m4_bd:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3650_m4_hd_firmware:*:*:*:*:*:*:*:* Versions before vve160c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3650_m4_hd:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3750_m4_firmware:*:*:*:*:*:*:*:* Versions before koe160c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3750_m4:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3850_x6_firmware:*:*:*:*:*:*:*:* Versions before a8e128c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3850_x6:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
- cpe:2.3:o:ibm:system_x3950_x6_firmware:*:*:*:*:*:*:*:* Versions before bee164c Vulnerable ·IBM
- cpe:2.3:h:ibm:system_x3950_x6:*:*:*:*:*:*:*:* Versions all versions Running on ·IBM
Remediation
- Fix · CNA System x UEFI (Lenovo) Fixed in varies
- Fix · CNA System x UEFI (IBM) Fixed in varies
Timeline
- 2026-10-02 Threatist record created from CVE-2018-9085
- 2026-10-03 Alias added: GHSA-r2wg-439c-8pcq
- 2026-10-05 EPSS moved to the 50th–90th percentile
References
More Lenovo Flex System X240 M4 Firmware vulnerabilities
- TI-2019-04360 Sensitive information in log files in Lenovo System x CVSS 3.0HIGH 7.5
- TI-2018-06584 Hard-coded credentials in Lenovo System x IMM2 CVSS 3.0HIGH 7.5
Sources
- CVE-2018-9085 · CVE Program
- CVE-2018-9085 · NVD
- FIRST EPSS
- GHSA-r2wg-439c-8pcq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences