{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-26333 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-26333 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-26333 is a critical unsafe deserialization vulnerability in Calero VeraSMART, published on 13 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-26333 and fix it if it is affected.\n\nWhat it is: CVE-2026-26333 is a critical unsafe deserialization vulnerability in Calero VeraSMART, published on 13 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-26333 in the wild and no public exploit code.\n\nAffected product: Calero VeraSMART. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-26333/ (Markdown: https://insights.sbomify.com/CVE-2026-26333/index.md)","id":"CVE-2026-26333","markdown":"https://insights.sbomify.com/CVE-2026-26333/index.md","name":"CVE-2026-26333","record":{"aliases":["GHSA-m4w4-g5c5-j4f4"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"VeraSMART application","requires_auth":"none","summary":"Unauthenticated attackers can exploit exposed .NET Remoting endpoints to read sensitive files and achieve remote code execution via ViewState deserialization.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"verasmart","vendor":"calero"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"},{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Calero VeraSMART versions prior to 2022 R1 expose an unauthenticated .NET Remoting HTTP service on TCP port 8001. The service publishes default ObjectURIs (including EndeavorServer.rem and RemoteFileReceiver.rem) and permits the use of SOAP and binary formatters with TypeFilterLevel set to Full. An unauthenticated remote attacker can invoke the exposed remoting endpoints to perform arbitrary file read and write operations via the WebClient class. This allows retrieval of sensitive files such as WebRoot\\\\web.config, which may disclose IIS machineKey validation and decryption keys. An attacker can use these keys to generate a malicious ASP.NET ViewState payload and achieve remote code execution within the IIS application context. Additionally, supplying a UNC path can trigger outbound SMB authentication from the service account, potentially exposing NTLMv2 hashes for relay or offline cracking.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Calero VeraSMART \u003c 2022 R1 .NET Remoting Arbitrary File Read Leading to ViewState RCE","id":"CVE-2026-26333","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Calero VeraSMART \u003c 2026 R1 Hardcoded Static AES Keys Allow Decryption of Service Credentials","id":"CVE-2026-26334"},"packages":[],"prev":{"headline":"vm2: Sandbox Escape","id":"CVE-2026-26332"},"products":["VeraSMART"],"published":"2026-02-13","related":[{"cvss_score":9.3,"headline":"Calero VeraSMART \u003c 2022 R1 Static IIS Machine Keys Enable ViewState RCE","id":"CVE-2026-26335","kev_date_added":null,"published":"2026-02-13"},{"cvss_score":8.5,"headline":"Calero VeraSMART \u003c 2026 R1 Hardcoded Static AES Keys Allow Decryption of Service Credentials","id":"CVE-2026-26334","kev_date_added":null,"published":"2026-02-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-14","vendors":["Calero"]},"summary":"Unauthenticated attackers can exploit exposed .NET Remoting endpoints to read sensitive files and achieve remote code execution via ViewState deserialization.","url":"https://insights.sbomify.com/CVE-2026-26333/"}