CVE-2018-1992

MEDIUM
6.4
CVSS Score
Published: March 21, 2019 at 02:35 PM UTC
Updated: June 17, 2026 at 01:52 AM UTC
23 products affected across 1 vendorPower System AC922 (8335-gth ) FirmwarePower System AC922 (8335-gtx ) FirmwarePower System AC922 (8335-gtg ) Firmware

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Severity
MEDIUM6.4
Exploit prediction
EPSS 0.4%

Description

The IBM Power 9 OP910, OP920, and FW910 boot firmware's bootloader is responsible for loading and validating the initial boot firmware image that drives the rest of the system's hardware initialization. The bootloader firmware contains a buffer overflow vulnerability such that, if an attacker were able to replace the initial boot firmware image with a very carefully crafted and sufficiently large, malicious replacement, it could cause the bootloader, during the load of that image, to overwrite its own instruction memory and circumvent secure boot protections, install trojans, etc. IBM X-Force ID: 154345.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < op910.30
Affected range stops below op910.30, so it looks safe — our inference, not a vendor statement
ibm-power-system-ac922-8335-gtg (same device)
v < op920.10
Affected range stops below op920.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-ac922-8335-gth (same device)
v < op920.10
Affected range stops below op920.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-ac922-8335-gtx (same device)
v < fw910.10
Affected range stops below fw910.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-h922-9223-22h (same device)
v < fw910.10
Affected range stops below fw910.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-h924-9223-42h (same device)
v < fw910.10
Affected range stops below fw910.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-l922-9008-22l (same device)
v < op920.10
Affected range stops below op920.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-lc921-9006-12p (same device)
v < op920.10
Affected range stops below op920.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-lc922-9006-22p (same device)
v < fw910.10
Affected range stops below fw910.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-s914-9009-41a (same device)
v < fw910.10
Affected range stops below fw910.10, so it looks safe — our inference, not a vendor statement
ibm-power-system-s922-9009-22a (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

CVSS

6.4MEDIUMibm
Attack Vector
LOCAL
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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