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CVE-2026-26201

emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 3.21.2, multiple shared maps are accessed without consistent synchronization across goroutines. Under concurrent activity, Go runtime can trigger `fatal error: concurrent map read and map write`, causing C2 process crash (availability loss). Version 3.21.2 fixes this issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0ecee34371d09f05d67543009195b4bc903d115343be46cdcf303f5bdad96cb8
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-663","description":"CWE-663: Use of a Non-reentrant Function in a Concurrent Context","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"emp3r0r","vendor":"jm33-m0","versions":[{"status":"affected","version":"< 3.21.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-663","description":"CWE-663: Use of a Non-reentrant Function in a Concurrent Context","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-362","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5","tags":["x_refsource_MISC"],"url":"https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/references/1
{"name":"https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2","tags":["x_refsource_MISC"],"url":"https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /containers/cna/references/2
{"name":"https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e87d79f3cb3ddbfbf83a7d994aeca912600e7a7b5a28c36e5854be0da560ac5b · sha256:30fe0a4600ec74ab… · /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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