CVE-2022-25235 (GCVE-0-2022-25235)
Vulnerability from cvelistv5 – Published: 2022-02-16 00:40 – Updated: 2025-05-05 16:23
VLAI
EPSS
VEX
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)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-23 13:27 UTC
CWE
- n/a
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://github.com/libexpat/libexpat/pull/562 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/02/19/1 | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2022/dsa-5085 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.debian.org/debian-lts-announce/2022… | mailing-listx_refsource_MLIST |
| https://www.oracle.com/security-alerts/cpuapr2022.html | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2022030… | x_refsource_CONFIRM |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
| https://security.gentoo.org/glsa/202209-24 | vendor-advisoryx_refsource_GENTOO |
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"refsource": "MLIST",
"url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20220303-0008/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20220303-0008/"
},
{
"name": "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf",
"refsource": "CONFIRM",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf"
},
{
"name": "GLSA-202209-24",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202209-24"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2022-25235",
"datePublished": "2022-02-16T00:40:20.000Z",
"dateReserved": "2022-02-16T00:00:00.000Z",
"dateUpdated": "2025-05-05T16:23:52.716Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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