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CVE-2026-18577

An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0d71f5c690e6d69a3a8b22dcfa23f32fe2cb157c162767a9cf63c3977e707a7c
Known exploited
CISA KEV
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"N-central","vendor":"N-able","versions":[{"lessThanOrEqual":"2026.3","status":"affected","version":"0","versionType":"custom"},{"status":"unaffected","version":"2026.3.1.7","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9a43e219bac897a43564613e42a869932848cfeb3e96069d0ea78da79b794c87 · sha256:8f9e2300c7b704d6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.2,"baseSeverity":"HIGH","exploitMaturity":"ATTACKED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L/E:A","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"H…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9a43e219bac897a43564613e42a869932848cfeb3e96069d0ea78da79b794c87 · sha256:8f9e2300c7b704d6… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-288","description":"CWE-288 Authentication bypass using an alternate path or channel","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9a43e219bac897a43564613e42a869932848cfeb3e96069d0ea78da79b794c87 · sha256:8f9e2300c7b704d6… · /containers/cna/problemTypes/0/descriptions/0

Known exploitation assertions

2 source assertions
{"cwes":["CWE-288"],"dateAdded":"2026-08-03","dueDate":"2026-08-06","knownRansomwareCampaignUse":"Unknown","notes":"https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm ; https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.go…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:6e484ea4f7868bc5df984d9d80d766b2623d2d7735e8180ae132744396782136 · sha256:635dff916c4092c0… · /vulnerabilities/3
    Open source location →
{"cwes":["CWE-288"],"dateAdded":"2026-08-03","dueDate":"2026-08-06","knownRansomwareCampaignUse":"Unknown","notes":"https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm ; https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.go…
  • cisa_kev_jsonknown_exploited
    urn:baitaphish:normalized-source-record:v2:dfc6a7432d404378811010f032dac3b6cd2d5cf6874c6360cdb8a60a1ab165fd · sha256:16acee8334e59e44… · /vulnerabilities/0
    Open source location →

Source references

4 source assertions
{"url":"https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9a43e219bac897a43564613e42a869932848cfeb3e96069d0ea78da79b794c87 · sha256:8f9e2300c7b704d6… · /containers/cna/references/0
{"url":"https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9a43e219bac897a43564613e42a869932848cfeb3e96069d0ea78da79b794c87 · sha256:8f9e2300c7b704d6… · /containers/cna/references/1
{"tags":["government-resource"],"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9a43e219bac897a43564613e42a869932848cfeb3e96069d0ea78da79b794c87 · sha256:8f9e2300c7b704d6… · /containers/adp/0/references/0
{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18556"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9a43e219bac897a43564613e42a869932848cfeb3e96069d0ea78da79b794c87 · sha256:8f9e2300c7b704d6… · /containers/cna/references/2

Attribution and limitations

  • CISA Known Exploited Vulnerabilities JSON: CISA named for provenance; do not use CISA/DHS marks or imply endorsement Source →
  • 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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