CVE-2022-25235 (GCVE-0-2022-25235)

Vulnerability from cvelistv5 – Published: 2022-02-16 00:40 – Updated: 2025-05-05 16:23
VLAI
Summary
xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • n/a
  • CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-06T22:14:22+00:00",
      "cve": "CVE-2022-25235",
      "id": "CVE-2022-25235",
      "initial_release_date": "2022-02-19T00:00:00+00:00",
      "product_status:fixed": "597",
      "product_status:known_affected": "4",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-25235.json",
      "version": "3"
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      "aggregate_severity": "important",
      "current_release_date": "2026-07-25T17:26:05Z",
      "cve": "CVE-2022-25235",
      "id": "CVE-2022-25235",
      "initial_release_date": "2023-02-15T03:27:28Z",
      "product_status:known_affected": "282",
      "product_status:recommended": "449",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-25235",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-25235.json",
      "version": "53"
    },
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  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.