Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-11836

Insufficient verification of data authenticity in Caliptra Core ROM and Core Firmware (validate_debug_unlock_token()) in subsystem mode allows an attacker with access to the integrator's debug unlock signing service to unlock production debug on an unintended device by presenting a valid token issued for a different device sharing the same debug unlock key hash. The 384-bit challenge nonce continues to prevent replay of previously issued tokens. Practical impact is limited to loss of per-device
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0f891ec4819dc58ee83cbd1f4757b5ef27ccfc7cfb985aca3a3deac617a2e059
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://github.com/chipsalliance/caliptra-sw","defaultStatus":"unaffected","modules":["validate_debug_unlock_token()"],"packageName":"Core Firmware","product":"Core Firmware","vendor":"Caliptra","versions":[{"lessThanOrEqual":"2.0.1","status":"affected","version":"2.0.0","versionType":"semver"},{"status":"unaffected","version":"2.0.2","versionType":"semver"},{"status":"affected","version":"2.1.0","versionType":"semver"},{"status":"unaffected","version":"2.1.1","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:231afc01fc5063d8ed38ee913fe6877e8eb0eae0874dc3b37d96a2e4320a31c8 · sha256:8febf0a5c6c0b739… · /containers/cna/affected/1

{"collectionURL":"https://github.com/chipsalliance/caliptra-sw","defaultStatus":"unaffected","modules":["validate_debug_unlock_token()"],"packageName":"Core ROM","product":"Core ROM","vendor":"Caliptra","versions":[{"lessThanOrEqual":"2.0.2","status":"affected","version":"2.0.0","versionType":"semver"},{"status":"unaffected","version":"2.0.3","versionType":"semver"},{"lessThanOrEqual":"2.1.1","status":"affected","version":"2.1.0","versionType":"semver"},{"status":"unaffected","version":"2.1.2","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:231afc01fc5063d8ed38ee913fe6877e8eb0eae0874dc3b37d96a2e4320a31c8 · sha256:8febf0a5c6c0b739… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"collectionURL":"https://github.com/chipsalliance/caliptra-sw","defaultStatus":"unaffected","modules":["validate_debug_unlock_token()"],"packageName":"Core Firmware","product":"Core Firmware","vendor":"Caliptra","versions":[{"lessThanOrEqual":"2.0.1","status":"affected","version":"2.0.0","versionType":"semver"},{"status":"unaffected","version":"2.0.2","versionType":"semver"},{"status":"affected","version":"2.1.0","versionType":"semver"},{"status":"unaffected","version":"2.1.1","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:231afc01fc5063d8ed38ee913fe6877e8eb0eae0874dc3b37d96a2e4320a31c8 · sha256:8febf0a5c6c0b739… · /containers/cna/affected/1
{"collectionURL":"https://github.com/chipsalliance/caliptra-sw","defaultStatus":"unaffected","modules":["validate_debug_unlock_token()"],"packageName":"Core ROM","product":"Core ROM","vendor":"Caliptra","versions":[{"lessThanOrEqual":"2.0.2","status":"affected","version":"2.0.0","versionType":"semver"},{"status":"unaffected","version":"2.0.3","versionType":"semver"},{"lessThanOrEqual":"2.1.1","status":"affected","version":"2.1.0","versionType":"semver"},{"status":"unaffected","version":"2.1.2","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:231afc01fc5063d8ed38ee913fe6877e8eb0eae0874dc3b37d96a2e4320a31c8 · sha256:8febf0a5c6c0b739… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":1.8,"baseSeverity":"LOW","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:231afc01fc5063d8ed38ee913fe6877e8eb0eae0874dc3b37d96a2e4320a31c8 · sha256:8febf0a5c6c0b739… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-345","description":"CWE-345 Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:231afc01fc5063d8ed38ee913fe6877e8eb0eae0874dc3b37d96a2e4320a31c8 · sha256:8febf0a5c6c0b739… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://github.com/chipsalliance/caliptra-sw/security/advisories/GHSA-hw68-jjx4-m376"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:231afc01fc5063d8ed38ee913fe6877e8eb0eae0874dc3b37d96a2e4320a31c8 · sha256:8febf0a5c6c0b739… · /containers/cna/references/0

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.

← Back to CVE Explorer