{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-53763 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-53763 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-53763 is a low-severity vulnerability in OP-TEE optee_os, published on 6 Jul 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-2026-53763 and fix it if it is affected.\n\nWhat it is: CVE-2026-53763 is a low-severity vulnerability in OP-TEE optee_os, published on 6 Jul 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-2026-53763 in the wild and no public exploit code.\n\nAffected product: OP-TEE optee_os. 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-2026-53763/ (Markdown: https://insights.sbomify.com/CVE-2026-53763/index.md)","id":"CVE-2026-53763","markdown":"https://insights.sbomify.com/CVE-2026-53763/index.md","name":"CVE-2026-53763","record":{"aliases":["DEBIAN-CVE-2026-53763","GHSA-fcm8-vjhf-6vqh","UBUNTU-CVE-2026-53763"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"OP-TEE Trusted Execution Environment","requires_auth":"low_privilege","summary":"Integer overflow in OP-TEE AES-GCM implementation breaks authentication tags for large payloads, allowing security bypass in Trusted Execution Environments.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"op-tee","vendor":"trustedfirmware"}],"cvss":{"score":3.8,"severity":"low","source":"cna","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 3.0.0 and prior to version 4.11.0, 32-bit integer overflows in OP-TEE core's AES-GCM implementation cause the authentication tag to be computed with incorrect bit-length values after processing more than 512 megabytes of payload or Additional Authenticated Data (AAD). Version 4.11.0 contains a patch. No known workarounds are available.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guarantee","id":"CVE-2026-53763","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"chrome-devtools-mcp: daemon.pid write follows symlinks in /tmp fallback runtime directory","id":"CVE-2026-53765"},"packages":[],"prev":{"headline":"VeraCryp: wolfCrypt backend bypasses VeraCrypt PBKDF2 iteration count (non-default WOLFCRYPT=1 builds)","id":"CVE-2026-53762"},"products":["optee_os"],"published":"2026-07-06","related":[{"cvss_score":9.8,"headline":"Memory corruption in OP-TEE","id":"CVE-2019-1010292","kev_date_added":null,"published":"2019-07-16"},{"cvss_score":9.8,"headline":"Memory corruption in OP-TEE","id":"CVE-2019-1010293","kev_date_added":null,"published":"2019-07-15"},{"cvss_score":9.8,"headline":"Linaro/OP-TEE OP-TEE 3.3.0 and earlier is affected by: Buffer Overflow.","id":"CVE-2019-1010295","kev_date_added":null,"published":"2019-07-15"},{"cvss_score":9.8,"headline":"Memory corruption in OP-TEE","id":"CVE-2019-1010296","kev_date_added":null,"published":"2019-07-15"},{"cvss_score":9.8,"headline":"Memory corruption in OP-TEE","id":"CVE-2019-1010297","kev_date_added":null,"published":"2019-07-15"},{"cvss_score":9.8,"headline":"Memory corruption in OP-TEE","id":"CVE-2019-1010298","kev_date_added":null,"published":"2019-07-15"},{"cvss_score":9.1,"headline":"Information disclosure in n/a","id":"CVE-2019-25052","kev_date_added":null,"published":"2021-08-11"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-07","vendors":["OP-TEE"]},"summary":"Integer overflow in OP-TEE AES-GCM implementation breaks authentication tags for large payloads, allowing security bypass in Trusted Execution Environments.","url":"https://insights.sbomify.com/CVE-2026-53763/"}