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CVE-2026-26068

emp3r0r is a stealth-focused C2 designed by Linux users for Linux environments. Prior to 3.21.1, untrusted agent metadata (Transport, Hostname) is accepted during check-in and later interpolated into tmux shell command strings executed via /bin/sh -c. This enables command injection and remote code execution on the operator host. This vulnerability is fixed in 3.21.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f9f31c834bf2ff6eb6afcbea30c876d7d1fe55b65cb828e75a49937226dc1abf
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-77","description":"CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"emp3r0r","vendor":"jm33-m0","versions":[{"status":"affected","version":"< 3.21.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","privilegesRequired":"LOW","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-77","description":"CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/jm33-m0/emp3r0r/commit/0cd64e4a26e7839a9a54bca3d756a665fcb7fda0","tags":["x_refsource_MISC"],"url":"https://github.com/jm33-m0/emp3r0r/commit/0cd64e4a26e7839a9a54bca3d756a665fcb7fda0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/references/1
{"name":"https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.1","tags":["x_refsource_MISC"],"url":"https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /containers/cna/references/2
{"name":"https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-h5p4-4xp4-vjpp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-h5p4-4xp4-vjpp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:429cc5a0a9af1fe064ac7742a3be3e87c1f530867b766ab421cdca2780cb8334 · sha256:ba248b0ad0d260f5… · /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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