CVE-2025-6273 (GCVE-0-2025-6273)
Vulnerability from cvelistv5 – Published: 2025-06-19 18:31 – Updated: 2025-06-23 19:30 Disputed
VLAI
EPSS
VEX
Title
WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion
Summary
A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect "real world wasm programs".
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-06-23 16:16 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.313277 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.313277 | signaturepermissions-required |
| https://vuldb.com/?submit.593010 | third-party-advisory |
| https://github.com/WebAssembly/wabt/issues/2574 | issue-tracking |
| https://github.com/user-attachments/files/1952941… | exploit |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| WebAssembly | wabt |
Affected:
1.0.0
Affected: 1.0.1 Affected: 1.0.2 Affected: 1.0.3 Affected: 1.0.4 Affected: 1.0.5 Affected: 1.0.6 Affected: 1.0.7 Affected: 1.0.8 Affected: 1.0.9 Affected: 1.0.10 Affected: 1.0.11 Affected: 1.0.12 Affected: 1.0.13 Affected: 1.0.14 Affected: 1.0.15 Affected: 1.0.16 Affected: 1.0.17 Affected: 1.0.18 Affected: 1.0.19 Affected: 1.0.20 Affected: 1.0.21 Affected: 1.0.22 Affected: 1.0.23 Affected: 1.0.24 Affected: 1.0.25 Affected: 1.0.26 Affected: 1.0.27 Affected: 1.0.28 Affected: 1.0.29 Affected: 1.0.30 Affected: 1.0.31 Affected: 1.0.32 Affected: 1.0.33 Affected: 1.0.34 Affected: 1.0.35 Affected: 1.0.36 Affected: 1.0.37 |
guessed |
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"status": "affected",
"version": "1.0.4"
},
{
"status": "affected",
"version": "1.0.5"
},
{
"status": "affected",
"version": "1.0.6"
},
{
"status": "affected",
"version": "1.0.7"
},
{
"status": "affected",
"version": "1.0.8"
},
{
"status": "affected",
"version": "1.0.9"
},
{
"status": "affected",
"version": "1.0.10"
},
{
"status": "affected",
"version": "1.0.11"
},
{
"status": "affected",
"version": "1.0.12"
},
{
"status": "affected",
"version": "1.0.13"
},
{
"status": "affected",
"version": "1.0.14"
},
{
"status": "affected",
"version": "1.0.15"
},
{
"status": "affected",
"version": "1.0.16"
},
{
"status": "affected",
"version": "1.0.17"
},
{
"status": "affected",
"version": "1.0.18"
},
{
"status": "affected",
"version": "1.0.19"
},
{
"status": "affected",
"version": "1.0.20"
},
{
"status": "affected",
"version": "1.0.21"
},
{
"status": "affected",
"version": "1.0.22"
},
{
"status": "affected",
"version": "1.0.23"
},
{
"status": "affected",
"version": "1.0.24"
},
{
"status": "affected",
"version": "1.0.25"
},
{
"status": "affected",
"version": "1.0.26"
},
{
"status": "affected",
"version": "1.0.27"
},
{
"status": "affected",
"version": "1.0.28"
},
{
"status": "affected",
"version": "1.0.29"
},
{
"status": "affected",
"version": "1.0.30"
},
{
"status": "affected",
"version": "1.0.31"
},
{
"status": "affected",
"version": "1.0.32"
},
{
"status": "affected",
"version": "1.0.33"
},
{
"status": "affected",
"version": "1.0.34"
},
{
"status": "affected",
"version": "1.0.35"
},
{
"status": "affected",
"version": "1.0.36"
},
{
"status": "affected",
"version": "1.0.37"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "JJLeo (VulDB User)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect \"real world wasm programs\"."
},
{
"lang": "de",
"value": "Eine problematische Schwachstelle wurde in WebAssembly wabt bis 1.0.37 gefunden. Dies betrifft die Funktion LogOpcode der Datei src/binary-reader-objdump.cc. Durch Manipulieren mit unbekannten Daten kann eine reachable assertion-Schwachstelle ausgenutzt werden. Umgesetzt werden muss der Angriff lokal. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung. Bisher konnte die Existenz der vermeintlichen Schwachstelle noch nicht eindeutig nachgewiesen werden."
}
],
"metrics": [
{
"cvssV4_0": {
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"version": "4.0"
}
},
{
"cvssV3_1": {
"baseScore": 3.3,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R",
"version": "3.1"
}
},
{
"cvssV3_0": {
"baseScore": 3.3,
"baseSeverity": "LOW",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R",
"version": "3.0"
}
},
{
"cvssV2_0": {
"baseScore": 1.7,
"vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR",
"version": "2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-617",
"description": "Reachable Assertion",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-06-19T18:31:06.692Z",
"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"shortName": "VulDB"
},
"references": [
{
"name": "VDB-313277 | WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion",
"tags": [
"vdb-entry",
"technical-description"
],
"url": "https://vuldb.com/?id.313277"
},
{
"name": "VDB-313277 | CTI Indicators (IOB, IOC, IOA)",
"tags": [
"signature",
"permissions-required"
],
"url": "https://vuldb.com/?ctiid.313277"
},
{
"name": "Submit #593010 | WebAssembly wabt wabt 1.0.37 (commit a60eb26) Reachable Assertion",
"tags": [
"third-party-advisory"
],
"url": "https://vuldb.com/?submit.593010"
},
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/WebAssembly/wabt/issues/2574"
},
{
"tags": [
"exploit"
],
"url": "https://github.com/user-attachments/files/19529411/wabt_crash.txt"
}
],
"tags": [
"disputed"
],
"timeline": [
{
"lang": "en",
"time": "2025-06-19T00:00:00.000Z",
"value": "Advisory disclosed"
},
{
"lang": "en",
"time": "2025-06-19T02:00:00.000Z",
"value": "VulDB entry created"
},
{
"lang": "en",
"time": "2025-06-19T08:44:00.000Z",
"value": "VulDB entry last update"
}
],
"title": "WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion"
}
},
"cveMetadata": {
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"assignerShortName": "VulDB",
"cveId": "CVE-2025-6273",
"datePublished": "2025-06-19T18:31:06.692Z",
"dateReserved": "2025-06-19T06:38:03.623Z",
"dateUpdated": "2025-06-23T19:30:37.748Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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.