{"data":{"id":"66faa1f2-52ff-46fb-8574-aa550b37a554","title":"Universal Cross-Prompt Adversarial Attacks on Promptable Concept Segmentation","summary":"Researchers present AdvPCS, a universal cross-prompt adversarial attack on Promptable Concept Segmentation in SAM3, which extends SAM-series models to concept-level prediction. The method combines min-max prompt optimization with perception deception and temporal memory misalignment attacks. A single universal adversarial perturbation (UAP) generalizes across frames from different videos and reduces the average mIoU of PCS models on the SA-CO dataset to below 5% under text prompts.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"https://arxiv.org/abs/2609.39265v1","publishedAt":"2026-09-30T08:23:06.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":["model_evasion"],"issueType":"research","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":["Meta"],"affectedVendorsRaw":["Segment Anything Model (SAM)","SAM3","SAM2","SA-CO dataset"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":null,"disclosureDate":"2026-09-30T08:23:06.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["integrity","availability"],"aiComponentTargeted":"model","llmSpecific":false,"classifierConfidence":0.95,"researchCategory":"preprint","atlasIds":null}}