CVE-2026-33277
CVE-2026-33277 is a high-severity vulnerability in Jpcert Logontracer with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v4: 8.7
- EPSS exploit prediction: 1% (65th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-25741
- Weakness: CWE-78
- Affected product: Jpcert Logontracer
- Published:
- Last modified:
Description
An OS command Injection issue exists in LogonTracer prior to v2.0.0. An arbitrary OS command may be executed by a logged-in user.
Frequently asked questions
- What is CVE-2026-33277?
- An OS command Injection issue exists in LogonTracer prior to v2.0.0. An arbitrary OS command may be executed by a logged-in user.
- How severe is CVE-2026-33277?
- CVE-2026-33277 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-33277 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-33277?
- CVE-2026-33277 affects Jpcert Logontracer. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-33277?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-33277 have an EU (EUVD) identifier?
- Yes. CVE-2026-33277 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25741.
- When was CVE-2026-33277 published?
- CVE-2026-33277 was published on 2026-04-27 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jpcert:logontracer:*:*:*:*:*:*:*:*
More vulnerabilities in Jpcert Logontracer
- CVE-2018-16168 — Critical (CVSS 9.8): LogonTracer 1.2.0 and earlier allows remote attackers to conduct Python code injection attacks via unspecified vectors.
- CVE-2018-16167 — Critical (CVSS 9.8): LogonTracer 1.2.0 and earlier allows remote attackers to execute arbitrary OS commands via unspecified vectors.
- CVE-2018-16166 — High (CVSS 8.8): LogonTracer 1.2.0 and earlier allows remote attackers to conduct XML External Entity (XXE) attacks via unspecified…
- CVE-2018-16165 — Medium (CVSS 6.1): Cross-site scripting vulnerability in LogonTracer 1.2.0 and earlier allows remote attackers to inject arbitrary web…
- CVE-2026-33566 — Medium (CVSS 4.3): There is a cypher injection issue in LogonTracer prior to v2.0.0. If specially crafted Windows event log data is…
All CVEs affecting Jpcert Logontracer →
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