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CVE-2026-23740

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, when ast_coredumper writes its gdb init and output files to a directory that is world-writable (for example /tmp), an attacker with write permission(which is all users on a linux system) to that directory can cause root to execute arbitrary commands or overwrite arbitrary files by controlling the gdb init file and output paths. This issue has been patched
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:be9959540c289cf0418eb5e9f0d808acf85088a8c1fb53277bf2ea991216e56f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":0,"baseSeverity":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:257ee78639f7ecefa4daa33e7077fcff38018b893af6e5e2e1535591baf122e6 · sha256:a358cceaeaea054b… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:257ee78639f7ecefa4daa33e7077fcff38018b893af6e5e2e1535591baf122e6 · sha256:a358cceaeaea054b… · /containers/adp/0/metrics/0/cvssV3_1

Affected products and versions

1 source assertion
{"product":"asterisk","vendor":"asterisk","versions":[{"status":"affected","version":"< 23.2.2"},{"status":"affected","version":"< 22.8.2"},{"status":"affected","version":"< 21.12.1"},{"status":"affected","version":"< 20.18.2"},{"status":"affected","version":"< 20.7-cert9"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:257ee78639f7ecefa4daa33e7077fcff38018b893af6e5e2e1535591baf122e6 · sha256:a358cceaeaea054b… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":0,"baseSeverity":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:257ee78639f7ecefa4daa33e7077fcff38018b893af6e5e2e1535591baf122e6 · sha256:a358cceaeaea054b… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:257ee78639f7ecefa4daa33e7077fcff38018b893af6e5e2e1535591baf122e6 · sha256:a358cceaeaea054b… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-427","description":"CWE-427: Uncontrolled Search Path Element","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:257ee78639f7ecefa4daa33e7077fcff38018b893af6e5e2e1535591baf122e6 · sha256:a358cceaeaea054b… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-xpc6-x892-v83c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:257ee78639f7ecefa4daa33e7077fcff38018b893af6e5e2e1535591baf122e6 · sha256:a358cceaeaea054b… · /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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