{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/powervm-hypervisor-fw1110.00-fw1110.20/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.4,"id":"CVE-2026-11885"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["PowerVM Hypervisor (FW1110.00-FW1110.20)","PowerVM Hypervisor (FW1060.00-FW1060.71)","PowerVM Hypervisor (FW950.00-FW950.H1)"],"_cs_severities":["high"],"_cs_tags":["vulnerability","hypervisor","buffer-overflow"],"_cs_type":"advisory","_cs_vendors":["IBM"],"content_html":"\u003cp\u003eIBM has disclosed a vulnerability (CVE-2026-11885) affecting the PowerVM Hypervisor, specifically impacting firmware versions FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H1. The vulnerability is classified as a classic buffer overflow (CWE-120), occurring when the hypervisor processes a carefully crafted hypercall from a guest operating system.\u003c/p\u003e\n\u003cp\u003eSuccessful exploitation allows a local attacker, already possessing low-level access to a guest OS, to perform operations that lead to a denial-of-service (system crash) or the corruption of protected OS memory. This vulnerability represents a significant risk for multi-tenant environments where the hypervisor is responsible for maintaining strict isolation boundaries between disparate workloads. Defenders should prioritize updating affected firmware versions to mitigate the risk of guest-to-host or guest-to-guest memory corruption.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eThe vulnerability poses a high risk to data integrity and system availability in virtualized environments. If exploited, an attacker could destabilize the host system or gain unauthorized control over the memory space of other guest partitions. This is particularly critical in enterprise data centers running consolidated workloads on IBM Power hardware. As of the time of disclosure, there is no evidence of active, widespread exploitation, but the ease of access (local/low privilege) makes it an attractive target for internal threat actors or compromised guest accounts.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAudit existing IBM PowerVM environments to identify systems running the vulnerable firmware versions (FW1110.x, FW1060.x, FW950.x).\u003c/li\u003e\n\u003cli\u003eApply the relevant firmware updates as detailed in the vendor advisory: \u003ca href=\"https://www.ibm.com/support/pages/node/7280628\"\u003ehttps://www.ibm.com/support/pages/node/7280628\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eRestrict administrative and low-level guest access to systems where patching cannot be performed immediately.\u003c/li\u003e\n\u003cli\u003eImplement enhanced monitoring for hypervisor-level errors or unexpected partition resets that could indicate exploitation attempts against the hypercall interface.\u003c/li\u003e\n\u003c/ol\u003e\n","date_modified":"2026-07-30T17:30:02Z","date_published":"2026-07-30T17:30:02Z","id":"https://feed.craftedsignal.io/briefs/2026-07-ibm-powervm-cve/","summary":"A buffer overflow vulnerability in IBM PowerVM Hypervisor allows a local attacker with low privileges to trigger system crashes or compromise OS memory integrity via crafted hypervisor calls.","title":"IBM PowerVM Hypervisor Memory Integrity Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-07-ibm-powervm-cve/"}],"language":"en","title":"CraftedSignal Threat Feed - PowerVM Hypervisor (FW1110.00-FW1110.20)","version":"https://jsonfeed.org/version/1.1"}