CVE Explorer

CVE-2026-54887

Use of Default Cryptographic Key vulnerability in Erlang/OTP ssl (DTLS server) allows predictable DTLS cookie computation during the startup window, enabling source address verification bypass. On DTLS server startup, dtls_server_connection:initial_hello/3 initializes previous_cookie_secret to the empty binary (<<>>) instead of a random value. Because HMAC with an empty key is deterministic, anyone who observes the plaintext ClientHello can compute dtls_handshake:cookie(<<>>, IP, Port, Hello) a

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:167d7b0f3726fc0e2d0ddb1cfdd328002ba95117fb263f01ddc57b5008270405

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["dtls_server_connection"],"packageName":"ssl","packageURL":"pkg:otp/ssl?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git","product":"OTP","programFiles":["src/dtls_server_connection.erl"],"programRoutines":[{"name":"dtls_server_connection:initial_hello/3"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"11.7.3","status":"unaffected"},{"at":"11.6.0.3","status":"unaffected"},{"at":"11.2.12.10","statu…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/affected/0

{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["dtls_server_connection"],"packageName":"erlang/otp","packageURL":"pkg:github/erlang/otp","product":"OTP","programFiles":["lib/ssl/src/dtls_server_connection.erl"],"programRoutines":[{"name":"dtls_server_connection:initial_hello/3"}],"repo":"https://github.com/erlang/otp","vendor":"Erlang","versions":[{"changes":[{"at":"29.0.3","status":"unaffected"},{"at":"28.5.0.3","status":"unaffected"},{"at":"27.3.4.14","status":"unaffected"}],"lessThan":"*","status":"affec…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-1394","description":"CWE-1394 Use of Default Cryptographic Key","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions

{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-54887.html"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/references/1

{"tags":["patch"],"url":"https://github.com/erlang/otp/commit/888e3bcd72d5406016b9e0de741026bc2a6f114d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/references/4

{"tags":["vendor-advisory","related"],"url":"https://github.com/erlang/otp/security/advisories/GHSA-p2m2-3c2w-8jp8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/references/0

{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-54887"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/references/2

{"tags":["x_version-scheme"],"url":"https://www.erlang.org/doc/system/versions.html#order-of-versions"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7342f2ca4547b5db8783bb94deb7dcb8397ed8c6b9fd02762038505bfe295b80 · sha256:c477bf0906b32ef0… · /containers/cna/references/3

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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