The second Anthropic-linked vulnerability known to have been exploited in the wild saw initial activity from an IP address in China targeting vulnerable hosts in the US and Japan. The vuln is a critical authentication-bypass bug in Rejetto HTTP File Server (HFS) that can lead to full admin access and remote code execution.
Anthropic's super bug-hunting model Mythos is hardcore good at math, as latest vuln under attack shows
About this summary. This is a short, independently written summary of an article first published by The Register. Cyber Security News did not report or verify the underlying story. Read the original: https://www.theregister.com/security/2026/10/03/anthropics-super-bug-hunting-model-mythos-is-hardcore-good-at-math-as-latest-vuln-under-attack-shows/5300933
Source attribution: headline and facts are from The Register (theregister.com). Summary method: excerpt of the source description. See our source attribution policy.
Related coverage
Suspected Chinese spies spoofed an Anthropic exec, ex-White House official in AI phishing
A suspected Chinese espionage group impersonated AI policy figures, including a senior Anthropic employee and a former White House official, in phishing campaigns…
Inside the Telecom Attack Surface: SS7, BGP Hijacking, and the Technical Reality of Nation-State Intrusions
Nation-state operators rarely need a zero-day to get inside a carrier. Much of the telecom stack still runs protocols designed when every participant was a known…
U.S. CISA adds Adobe and WSO2 flaws to its Known Exploited Vulnerabilities catalog
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Adobe and WSO2 flaws to its Known Exploited Vulnerabilities catalog. The U.S.
Crook used three open source agents to break into a Fortune 500 hospitality company, a major US airline and 25+ other orgs
A crook has been using three open source AI harnesses to target hundreds of online retailers and other companies, swiping more than 600,000 credit card records and…
China's Salt Typhoon backdoors Latin American orgs with new snooping malware
China’s Salt Typhoon gang has developed a new backdoor and dropped it in networks belonging to high-profile organizations in several countries across Central and South…
The latest AI doomsayer is China’s intelligence boss
China’s minister for State Security has decided AI might be bad for the nation’s ruling Communist Party. Party secretary and minister Chen Yixin’s views appeared in…