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    CVE-2021-33449

    An issue was discovered in mjs (mJS: Restricted JavaScript engine), ES6 (JavaScript version 6). There is NULL pointer dereference in mjs_bcode_part_get_by_offset() in mjs.c.

    Published:Jul 26, 2022
    Last Modified:Nov 21, 2024
    EPS:Jul 26, 2022
    EPSS Score:0.00046
    CVSS Score:5.5

    Affected Products

    Vendor
    Cesanta
    Product
    Mjs

    Exploits

    https://github.com/cesanta/mjs/issues/162https://github.com/cesanta/mjs/issues/162

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-86716 (CVSS 5.5) — A vulnerability was determined in Cesanta mJS up to 1.26. Affected is the function skip_spaces_and_comments of…
    CVE-2024-35385 (CVSS 4.3) — An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_mk_ffi_sig fu…
    CVE-2024-35384 (CVSS 5.5) — An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_array_length …
    CVE-2024-35386 (CVSS 7.5) — An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_do_gc functio…
    CVE-2023-49552 (CVSS 7.5) — An Out of Bounds Write in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs…
    CVE-2023-49551 (CVSS 7.5) — An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_op_json_parse…
    CVE-2023-49550 (CVSS 7.5) — An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs+0x4ec508 comp…
    CVE-2023-49553 (CVSS 7.5) — An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_destroy funct…
    CVE-2023-49549 (CVSS 7.5) — An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_getretvalpos …
    CVE-2023-50044 (CVSS 9.8) — Cesanta MJS 2.20.0 has a getprop_builtin_foreign out-of-bounds read if a Built-in API name occurs in a substri…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High