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CVE-2026-63089

WireGuard Easy through 15.3.0, fixed in commit 66b292b, contains a cryptographically weak one-time link token generation vulnerability that allows unauthenticated network attackers to recover WireGuard peer credentials by brute-forcing a keyspace of at most 1000 candidate tokens per client ID, as the token is computed using CRC32 over a random value constrained to 0-999. Attackers can enumerate candidate tokens against the unauthenticated /cnf/:oneTimeLink route, which lacks rate limiting and do
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:cccf28dcb4f016f7ffd4db11bcfee6e714a234ca87840353bee6ec0619b7710f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpac…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-338","description":"Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-613","description":"Insufficient Session Expiration","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"wg-easy","repo":"https://github.com/wg-easy/wg-easy","vendor":"wg-easy","versions":[{"lessThanOrEqual":"15.3.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"66b292b11bde3664f05ffb016c8082665d261ded","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-338","description":"Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-613","description":"Insufficient Session Expiration","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/problemTypes/0/descriptions/1

Source references

3 source assertions
{"name":"Patch Commit","tags":["patch"],"url":"https://github.com/wg-easy/wg-easy/commit/66b292b11bde3664f05ffb016c8082665d261ded"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/references/1
{"name":"Pull Request","tags":["issue-tracking"],"url":"https://github.com/wg-easy/wg-easy/pull/2661"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/wireguard-easy-weak-token-generation-information-disclosure-via-otl-route"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e18e0118600fb87cac76da322585d5743bf883fe18a53cf2215158a006176a92 · sha256:14079a1ebf2e5b75… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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