Cloud
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CISA sets Dec. 12 deadline to patch React2Shell RSC flaw amid widespread exploitation
CISA has set a December 12 deadline for federal agencies to patch the critical React2Shell RSC vulnerability CVE-2025-55182 after widespread exploitation was observed; security firms report rapid, opportunistic scans and attacks against Next.js and other internet-facing services.
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Unpatched Gogs vulnerability being actively exploited; hundreds of instances compromised
Wiz researchers say a high-severity unpatched flaw in Gogs (CVE-2025-8110) is being actively exploited, with more than 700 compromised instances; the issue allows file overwrites via symbolic links and can lead to remote code execution. Researchers recommend disabling open registration, limiting internet exposure and scanning for random repositories while a fix is developed.
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Hard-coded cryptographic keys in Gladinet CentreStack and Triofox exploited to access web.config, Huntress says
Huntress warned that hard-coded cryptographic keys in Gladinet CentreStack and Triofox allow attackers to decrypt or forge access tickets and retrieve web.config files, enabling ViewState deserialization attempts; nine organisations have been affected and vendors have released updates.
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Fortinet, Ivanti and SAP issue urgent patches for critical authentication and code execution flaws
Fortinet, Ivanti and SAP released urgent security updates for multiple critical flaws, including authentication bypass and remote code execution bugs; administrators are urged to apply patches and temporary mitigations promptly.
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North Korea-linked actors exploit React2Shell flaw to deploy EtherRAT using Ethereum-based C2
Sysdig reported that actors tied to North Korea exploited a critical React Server Components flaw to deploy EtherRAT, a Node.js-based remote access trojan that uses Ethereum smart contracts and RPC consensus for C2 resolution and multiple Linux persistence mechanisms.
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CISA details BRICKSTORM backdoor used by PRC-linked hackers against vSphere and Windows environments
CISA has published technical details of BRICKSTORM, a Golang backdoor used by PRC-linked threat actors to maintain stealthy, long-term access to VMware vSphere and Windows environments; CrowdStrike and other firms link the tool to UNC5221 and Warp Panda, while the Chinese embassy has denied the allegations.
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Cloudflare says emergency React2Shell patch caused brief network outage
Cloudflare said an emergency change to its Web Application Firewall to mitigate the critical React2Shell vulnerability briefly made its network unavailable, causing widespread 500 errors. The React flaw can allow unauthenticated remote code execution and researchers report active exploitation and circulating proof-of-concept exploits.
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Cloudflare mitigates 29.7 Tbps DDoS attack linked to AISURU botnet
Cloudflare said it mitigated a 29.7 Tbps DDoS attack linked to the AISURU botnet; the UDP “carpet-bombing” assault lasted 69 seconds, the target was not disclosed, and the company flagged a rise in large, sophisticated attacks in 2025.
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Critical React Server Components flaw (React2shell) allows unauthenticated remote code execution; Next.js also affected
A critical deserialization flaw in React Server Components, tracked as CVE-2025-55182 and nicknamed React2shell, can allow unauthenticated remote code execution; related Next.js App Router releases are covered by CVE-2025-66478. Patches are available and vendors and security firms advise applying fixes and using WAFs or access restrictions.
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CISA adds OpenPLC ScadaBR XSS flaw to Known Exploited Vulnerabilities list amid active attacks
CISA added CVE-2021-26829, a cross-site scripting flaw in OpenPLC ScadaBR, to its Known Exploited Vulnerabilities catalog after evidence of active exploitation tied to a hacktivist operation; Forescout and VulnCheck reported related intrusions and a sustained OAST-driven exploit campaign.
