CVE-2026-18642 (GCVE-0-2026-18642)
Vulnerability from cvelistv5 – Published: 2026-08-03 13:31 – Updated: 2026-08-03 13:31
VLAI
EPSS
VEX
Title
Remote Code Execution via Insecure Deserialization in TÜBİTAK BİLGEM's eta-otp-lock
Summary
Deserialization of untrusted data vulnerability in TUBITAK BILGEM Software Technologies Research Institute eta-otp-lock allows Object Injection.
This issue affects eta-otp-lock: before 1.0.4.
Severity
7.8 (High)
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://siberguvenlik.gov.tr/guvenlik-bildirimler… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TUBITAK BILGEM Software Technologies Research Institute | eta-otp-lock |
Affected:
0 , < 1.0.4
(custom)
|
Date Public
2026-08-03 13:25
Credits
{
"containers": {
"cna": {
"affected": [
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"defaultStatus": "unaffected",
"product": "eta-otp-lock",
"vendor": "TUBITAK BILGEM Software Technologies Research Institute",
"versions": [
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"lessThan": "1.0.4",
"status": "affected",
"version": "0",
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}
]
}
],
"credits": [
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"lang": "en",
"type": "finder",
"value": "Emirhan Y\u00dcCEL"
}
],
"datePublic": "2026-08-03T13:25:00.000Z",
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}
],
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"impacts": [
{
"capecId": "CAPEC-586",
"descriptions": [
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"value": "CAPEC-586 Object Injection"
}
]
}
],
"metrics": [
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
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"scenarios": [
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"value": "GENERAL"
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],
"problemTypes": [
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"descriptions": [
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"description": "CWE-502 Deserialization of untrusted data",
"lang": "en",
"type": "CWE"
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],
"providerMetadata": {
"dateUpdated": "2026-08-03T13:31:04.311Z",
"orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"shortName": "TR-CERT"
},
"references": [
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"tags": [
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],
"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0730"
}
],
"source": {
"advisory": "TR-26-0730",
"defect": [
"TR-26-0730"
],
"discovery": "UNKNOWN"
},
"title": "Remote Code Execution via Insecure Deserialization in T\u00dcB\u0130TAK B\u0130LGEM\u0027s eta-otp-lock",
"x_generator": {
"engine": "Vulnogram 1.0.4"
}
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},
"cveMetadata": {
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"assignerShortName": "TR-CERT",
"cveId": "CVE-2026-18642",
"datePublished": "2026-08-03T13:31:04.311Z",
"dateReserved": "2026-08-03T10:59:36.583Z",
"dateUpdated": "2026-08-03T13:31:04.311Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-18642\",\"sourceIdentifier\":\"iletisim@usom.gov.tr\",\"published\":\"2026-08-03T14:16:26.123\",\"lastModified\":\"2026-08-03T14:16:26.123\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Deserialization of untrusted data vulnerability in TUBITAK BILGEM Software Technologies Research Institute eta-otp-lock allows Object Injection.\\n\\nThis issue affects eta-otp-lock: before 1.0.4.\"}],\"affected\":[{\"source\":\"iletisim@usom.gov.tr\",\"affectedData\":[{\"vendor\":\"TUBITAK BILGEM Software Technologies Research Institute\",\"product\":\"eta-otp-lock\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"1.0.4\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"iletisim@usom.gov.tr\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"iletisim@usom.gov.tr\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-502\"}]}],\"references\":[{\"url\":\"https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0730\",\"source\":\"iletisim@usom.gov.tr\"}]}}"
}
}
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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.
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