Google Risk Intelligence Group (GTIG) has issued a warning relating to the widespread exploitation of a vital safety flaw in React Server Elements.
Often known as React2Shell (CVE-2025-55182), this vulnerability permits attackers to take management of servers remotely without having a password.
Because the vulnerability was disclosed on December 3, 2025, Google has noticed a number of distinct hacker teams abusing the flaw.
The attackers vary from state-sponsored espionage teams to cybercriminals in search of monetary achieve.
Risk Actors and Malware Campaigns
Google researchers have recognized a number of campaigns concentrating on unpatched methods. Key observations embrace:
China-Nexus Espionage: Teams linked to China are utilizing React2Shell to deploy backdoors and stealthy instruments. One group, UNC6600, installs the MINOCAT tunneler to keep up hidden entry to sufferer networks. One other group, UNC6603, makes use of an up to date model of the HISONIC backdoor, which hides its site visitors by speaking via legit providers like Cloudflare.
Monetary Cybercrime: Opportunistic attackers are utilizing the flaw to put in cryptocurrency miners. In a single case, criminals deployed XMRig to generate digital foreign money utilizing the sufferer’s server energy.
Further Threats: Different recognized malware consists of the SNOWLIGHT downloader and the COMPOOD backdoor, each used to steal knowledge or load additional malicious software program.
React2Shell is rated with a most severity rating of 10.0 (CVSS v3). It impacts particular variations of React and Subsequent.js, widespread frameworks used to construct trendy web sites. As a result of these instruments are broadly used, many organisations are at the moment uncovered.
Google warns that legit exploit code is now publicly accessible, making it simpler for attackers to strike.
Whereas some early exploit instruments have been faux or damaged, useful strategies together with instruments that may set up internet shells immediately into reminiscence are actually in circulation.
Safety consultants urge directors to patch affected methods instantly. Organizations utilizing Subsequent.js or React Server Elements ought to confirm they’re working safe variations to forestall unauthorized entry.
IoC
IndicatorTypeDescriptionreactcdn.windowserrorapis[.]comDomainSNOWLIGHT C2 and Staging Server82.163.22[.]139IP AddressSNOWLIGHT C2 Server216.158.232[.]43IP AddressStaging server for intercourse.sh script45.76.155[.]14IP AddressCOMPOOD C2 and Payload Staging Serverdf3f20a961d29eed46636783b71589c183675510737c984a11f78932b177b540SHA256HISONIC sample92064e210b23cf5b94585d3722bf53373d54fb4114dca25c34e010d0c010edf3SHA256HISONIC sample0bc65a55a84d1b2e2a320d2b011186a14f9074d6d28ff9120cb24fcc03c3f696SHA256ANGRYREBEL.LINUX sample13675cca4674a8f9a8fabe4f9df4ae0ae9ef11986dd1dcc6a896912c7d527274SHA256XMRIG Downloader Script (filename: intercourse.sh)7f05bad031d22c2bb4352bf0b6b9ee2ca064a4c0e11a317e6fedc694de37737aSHA256SNOWLIGHT pattern (filename: linux_amd64)776850a1e6d6915e9bf35aa83554616129acd94e3a3f6673bd6ddaec530f4273SHA256MINOCAT pattern
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