Epoch AI says open-weight GLM 5.3 exploited Firefox patch gaps for about $1,000 each
Researchers at Epoch AI found that the Chinese open-weight model GLM 5.3 exploited the patch gap across 6 Firefox versions, at roughly $1,000 in API fees per successful attack, The Decoder reports. Neither Z.ai nor other API providers triggered any safety guardrails or refusals when the researchers used it for exploit development.
NoteAny firm that relies on vendor software could ask how quickly security fixes reach its own users after they become visible in public code.
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