CVE-2025-6703

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Source
https://cve.org/CVERecord?id=CVE-2025-6703
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6703.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-6703
Aliases
  • GHSA-jfv6-x22w-grhf
Published
2025-06-26T09:30:03.893Z
Modified
2026-07-15T01:49:19.148766867Z
Severity
  • 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/AU:Y/R:A/RE:L/U:Clear CVSS Calculator
Summary
transport/fc.rs: panic attempting to send MAX_DATA with value larger max varint
Details

Improper Input Validation vulnerability in Mozilla neqo leads to an unexploitable crash..This issue affects neqo: from 0.4.24 through 0.13.2.

Database specific 
{
    "cwe_ids": [
        "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6703.json",
    "cna_assigner": "mozilla"
}
References

Affected packages

Git / github.com/mozilla/neqo

Affected ranges

Type
GIT
Repo
https://github.com/mozilla/neqo
Events
Introduced
9ac8581e2df27f2e5b03abeba923dad1a7b9f6c4
Last affected
847a5989f20d30eb3675d1435180fd48a8c6a3ad
Database specific 
{
    "cpe": "cpe:2.3:a:mozilla:neqo:*:*:*:*:*:rust:*:*",
    "extracted_events": [
        {
            "introduced": "0.4.24"
        },
        {
            "last_affected": "0.13.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v0.*
v0.10.0
v0.11.0
v0.12.0
v0.12.1
v0.12.2
v0.13.0
v0.13.1
v0.13.2
v0.4.24
v0.4.25
v0.4.26
v0.4.27
v0.4.28
v0.4.29
v0.4.30
v0.4.31
v0.4.32
v0.5.0
v0.5.1
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.6.8
v0.6.9
v0.7.0
v0.7.1
v0.7.2
v0.7.3
v0.7.4
v0.7.5
v0.7.6
v0.7.7
v0.7.8
v0.7.9
v0.8.0
v0.8.1
v0.9.0
v0.9.1
v0.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6703.json"