CVE Explorer

CVE-2026-25791

Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.7.0, the DNS C2 listener accepts unauthenticated TOTP bootstrap messages and allocates server-side DNS sessions without validating OTP values, even when EnforceOTP is enabled. Because sessions are stored without a cleanup/expiry path in this flow, an unauthenticated remote actor can repeatedly create sessions and drive memory exhaustion. This vulnerability is fixed in 1.7.0.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0a954fc3a73458e17f248cca42f1e972fd2bb62d4a8697eff2e19d5bceab0aec

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"product":"sliver","vendor":"BishopFox","versions":[{"status":"affected","version":"< 1.7.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/BishopFox/sliver/releases/tag/v1.7.0","tags":["x_refsource_MISC"],"url":"https://github.com/BishopFox/sliver/releases/tag/v1.7.0"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /containers/cna/references/1

{"name":"https://github.com/BishopFox/sliver/security/advisories/GHSA-wxrw-gvg8-fqjp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/BishopFox/sliver/security/advisories/GHSA-wxrw-gvg8-fqjp"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f88075c0dc76fa30bdb10cb1c1e1baae6dbc9205833b51ed341aa9f79e97655d · sha256:dccf8730c4220e35… · /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.

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