CVE-2026-1621 (GCVE-0-2026-1621)
Vulnerability from cvelistv5 – Published: 2026-08-14 14:08 – Updated: 2026-08-14 14:37
VLAI
EPSS
VEX
Title
Register Bypass in Universal Sotware's E-Municipality
Summary
Authentication bypass by primary weakness vulnerability in Universal Software Inc. E-Municipality allows Exploitation of Trusted Identifiers.
This issue affects E-Municipality: from 20251127 before 20260204.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 14:37 UTC
CWE
- CWE-305 - Authentication bypass by primary weakness
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://siberguvenlik.gov.tr/guvenlik-bildirimler… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Universal Software Inc. | E-Municipality |
Affected:
20251127 , < 20260204
(custom)
|
guessed |
Date Public
2026-08-14 14:02
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-1621",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-14T14:37:00.523197Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T14:37:12.458Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "E-Municipality",
"vendor": "Universal Software Inc.",
"versions": [
{
"lessThan": "20260204",
"status": "affected",
"version": "20251127",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "\u0130brahim Y\u0130\u011e\u0130TSOY"
}
],
"datePublic": "2026-08-14T14:02:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Authentication bypass by primary weakness vulnerability in Universal Software Inc. E-Municipality allows Exploitation of Trusted Identifiers.\u003cp\u003eThis issue affects E-Municipality: from 20251127 before 20260204.\u003c/p\u003e"
}
],
"value": "Authentication bypass by primary weakness vulnerability in Universal Software Inc. E-Municipality allows Exploitation of Trusted Identifiers.\n\nThis issue affects E-Municipality: from 20251127 before 20260204."
}
],
"impacts": [
{
"capecId": "CAPEC-21",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-21 Exploitation of Trusted Identifiers"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-305",
"description": "CWE-305 Authentication bypass by primary weakness",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T14:08:37.355Z",
"orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"shortName": "TR-CERT"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0846"
}
],
"source": {
"advisory": "TR-26-0846",
"defect": [
"TR-26-0846"
],
"discovery": "UNKNOWN"
},
"title": "Register Bypass in Universal Sotware\u0027s E-Municipality",
"x_generator": {
"engine": "Vulnogram 1.0.4"
}
}
},
"cveMetadata": {
"assignerOrgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"assignerShortName": "TR-CERT",
"cveId": "CVE-2026-1621",
"datePublished": "2026-08-14T14:08:37.355Z",
"dateReserved": "2026-01-29T14:20:16.810Z",
"dateUpdated": "2026-08-14T14:37:12.458Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-1621",
"date": "2026-10-01",
"epss": "0.00405",
"percentile": "0.32298"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "E-Municipality",
"vendor": "Universal Software Inc.",
"versions": [
{
"lessThan": "20260204",
"status": "affected",
"version": "20251127",
"versionType": "custom"
}
]
}
],
"source": "iletisim@usom.gov.tr"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Authentication bypass by primary weakness vulnerability in Universal Software Inc. E-Municipality allows Exploitation of Trusted Identifiers.\n\nThis issue affects E-Municipality: from 20251127 before 20260204."
}
],
"id": "CVE-2026-1621",
"lastModified": "2026-08-26T16:51:19.490",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "iletisim@usom.gov.tr",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-1621",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-14T14:37:00.523197Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-14T14:16:51.610",
"references": [
{
"source": "iletisim@usom.gov.tr",
"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0846"
}
],
"sourceIdentifier": "iletisim@usom.gov.tr",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-305"
}
],
"source": "iletisim@usom.gov.tr",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-1621",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-14T14:37:00.523197Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T14:37:07.677Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "E-Municipality",
"vendor": "Universal Software Inc.",
"versions": [
{
"lessThan": "20260204",
"status": "affected",
"version": "20251127",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "\u0130brahim Y\u0130\u011e\u0130TSOY"
}
],
"datePublic": "2026-08-14T14:02:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Authentication bypass by primary weakness vulnerability in Universal Software Inc. E-Municipality allows Exploitation of Trusted Identifiers.\u003cp\u003eThis issue affects E-Municipality: from 20251127 before 20260204.\u003c/p\u003e"
}
],
"value": "Authentication bypass by primary weakness vulnerability in Universal Software Inc. E-Municipality allows Exploitation of Trusted Identifiers.\n\nThis issue affects E-Municipality: from 20251127 before 20260204."
}
],
"impacts": [
{
"capecId": "CAPEC-21",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-21 Exploitation of Trusted Identifiers"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-305",
"description": "CWE-305 Authentication bypass by primary weakness",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-14T14:08:37.355Z",
"orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"shortName": "TR-CERT"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0846"
}
],
"source": {
"advisory": "TR-26-0846",
"defect": [
"TR-26-0846"
],
"discovery": "UNKNOWN"
},
"title": "Register Bypass in Universal Sotware\u0027s E-Municipality",
"x_generator": {
"engine": "Vulnogram 1.0.4"
}
}
},
"cveMetadata": {
"assignerOrgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21",
"assignerShortName": "TR-CERT",
"cveId": "CVE-2026-1621",
"datePublished": "2026-08-14T14:08:37.355Z",
"dateReserved": "2026-01-29T14:20:16.810Z",
"dateUpdated": "2026-08-14T14:37:12.458Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…
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.
Loading…
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.
Loading…