CVE-2020-26159 (GCVE-0-2020-26159)
Vulnerability from cvelistv5 – Published: 2020-09-30 12:41 – Updated: 2021-02-02 20:16
VLAI
EPSS
VEX
DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it was not a security issue. Notes: none
Show details on NVD website{
"containers": {
"cna": {
"providerMetadata": {
"dateUpdated": "2021-02-02T20:16:32.000Z",
"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"shortName": "mitre"
},
"rejectedReasons": [
{
"lang": "en",
"value": "DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it was not a security issue. Notes: none"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2020-26159",
"datePublished": "2020-09-30T12:41:13.000Z",
"dateRejected": "2021-02-02T20:16:32.000Z",
"dateReserved": "2020-09-30T00:00:00.000Z",
"dateUpdated": "2021-02-02T20:16:32.000Z",
"state": "REJECTED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.0",
"vulnerability-lookup:meta": {
"fkie_nvd": {
"descriptions": "[{\"lang\": \"en\", \"value\": \"Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it was not a security issue. Notes: none\"}]",
"id": "CVE-2020-26159",
"lastModified": "2023-11-07T03:20:30.767",
"published": "2020-09-30T21:15:13.357",
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Rejected"
},
"microsoft_vex": {
"current_release_date": "2025-10-01T23:11:05.000Z",
"cve": "CVE-2020-26159",
"id": "msrc_CVE-2020-26159",
"initial_release_date": "2020-09-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it was not a security issue. Notes: none",
"url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-26159.json",
"version": "1"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2020-26159\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-09-30T21:15:13.357\",\"lastModified\":\"2023-11-07T03:20:30.767\",\"vulnStatus\":\"Rejected\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Further investigation showed that it was not a security issue. Notes: none\"}],\"metrics\":{},\"references\":[]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T21:43:16+00:00",
"cve": "CVE-2020-26159",
"id": "CVE-2020-26159",
"initial_release_date": "2020-09-15T00:00:00+00:00",
"product_status:known_affected": "253",
"product_status:known_not_affected": "142",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "oniguruma: Buffer overflow in concat_opt_exact_str could result in DoS",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-26159.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-02T02:28:49Z",
"cve": "CVE-2020-26159",
"id": "CVE-2020-26159",
"initial_release_date": "2023-02-15T03:53:18Z",
"product_status:known_affected": "243",
"product_status:recommended": "272",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-26159",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-26159.json",
"version": "52"
}
}
}
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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.
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.
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