{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21444 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-21444 is a medium-severity vulnerability in stefanberger libtpms, published on 2 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-21444 and fix it if it is affected.\n\nWhat it is: CVE-2026-21444 is a medium-severity vulnerability in stefanberger libtpms, published on 2 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-21444 in the wild and no public exploit code.\n\nAffected product: stefanberger libtpms. 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-2026-21444/ (Markdown: https://insights.sbomify.com/CVE-2026-21444/index.md)","id":"CVE-2026-21444","markdown":"https://insights.sbomify.com/CVE-2026-21444/index.md","name":"CVE-2026-21444","record":{"aliases":["DEBIAN-CVE-2026-21444","GHSA-7jxr-4j3g-p34f","openSUSE-SU-2026:10422-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"TPM emulation library","requires_auth":"low_privilege","summary":"libtpms returns the initial IV instead of the last IV for certain symmetric ciphers, weakening encryption and compromising data confidentiality.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"libtpms","vendor":"libtpms_project"}],"cvss":{"score":5.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-330","name":"Use of Insufficiently Random Values"},{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm"}],"description":"libtpms, a library that provides software emulation of a Trusted Platform Module, has a flaw in versions 0.10.0 and 0.10.1. The commonly used integration of libtpms with OpenSSL 3.x contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality. Version 0.10.2 fixes the issue. No known workarounds are available.","ecosystems":["openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"libtpms returns wrong initialization vector when certain symmetric ciphers are used","id":"CVE-2026-21444","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":1,"n_references":3,"next":{"headline":"Langflow Missing Authentication on Critical API Endpoints","id":"CVE-2026-21445"},"packages":[{"ecosystem":"openSUSE:Tumbleweed","fixed":["0.10.2-1.1"],"introduced":["0"],"last_affected":[],"package":"libtpms","purl":"pkg:rpm/opensuse/libtpms\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:10422-1"}],"prev":{"headline":"OpenEMR allows inconsistent escaping of translation function output","id":"CVE-2026-21443"},"products":["libtpms"],"published":"2026-01-02","related":[{"cvss_score":5.9,"headline":"Libtpms contains a possible out-of-bound access and abort due to HMAC signing issue","id":"CVE-2025-49133","kev_date_added":null,"published":"2025-06-10"},{"cvss_score":5.5,"headline":"Memory corruption in libtpms","id":"CVE-2021-3569","kev_date_added":null,"published":"2021-06-03"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-05","vendors":["stefanberger"]},"summary":"libtpms returns the initial IV instead of the last IV for certain symmetric ciphers, weakening encryption and compromising data confidentiality.","url":"https://insights.sbomify.com/CVE-2026-21444/"}