Daily Edition · Page 8

THE DAILY INDEX

Technology, AI, software, security, crypto and business

GENERAL

TLDR InfoSec

RECENTLY PATCHED PAPERCUT ZERO-DAYS USED IN DATA THEFT ATTACKS

PaperCut Software announced two new vulnerabilities that have been patched in its PaperCut NG and MF print management software. The vulnerabilities involve an authentication bypass vulnerability which can be chained with a separately disclosed vulnerability to achieve RCE. Threat intelligence firm Defused reports that the authentication bypass vulnerability is being exploited by attackers for data theft.

DON'T LET ABLITERATION ABLITERATE YOUR BUG HUNTING: DISCOVERING VERDICT BIAS IN UNCENSORED MODELS

Tests of Gemma and Qwen builds found that abliterated variants approved of far more vulnerability candidates. In FreeBSD's sys/rpc, one Heretic build marked 138 of 144 candidates VALID, while the base marked 26 of 40. The Heretic run missed CVE-2026-4747 after spending its scan on false findings. A false heap-overflow claim survived because abliterated builds described the buffer bound, then still confirmed an overflow.

CAN AI CREATE PLC ATTACKS? YES, BUT IT'S NOT THAT EASY YET

Forescout used an AI model to port an RCE exploit from a WAGO 750-852 PLC to a 750-831 PLC running the same vulnerable Nucleus FTP server (CVE-2021-31886). The AI needed constant human guidance: correcting false leads, supplying disassembly context, and running Ghidra scripts it wrote itself. The final exploit stage took 8 hours 32 minutes and cost $535.74 in API tokens. A follow-up attempt to build a C2 implant bricked the PLC. Once code execution worked, the AI wrote working ICMP and UDP payloads within minutes.

SPRING RING: AN INSIDE LOOK AT VOICE PHISHING CAMPAIGNS IN MICROSOFT TEAMS

Threat actors are executing voice phishing campaigns by registering external .onmicrosoft[.]com tenants with fake help desk names, initiating Microsoft Teams chats, and escalating to calls to trick victims into launching remote management tools. Following initial access, the attackers deliver distinct payloads that include an obfuscated PowerShell RAT designed to disable AMSI via the amsiInitFailed flag, and a Python-based execution chain that attempts PetitPotam coercion against domain controllers over port 445. To mitigate this threat, organizations must restrict external Teams access by default, block the associated payload hash, and proactively hunt for rapid chat-to-call sequences originating from commercial VPN nodes.

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