CVE-2026-3631
CVE-2026-3631 is a high-severity vulnerability in Deltaww Commgr2 with a CVSS 3.x base score of 7.5. 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-125.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (55th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10287
- Weakness: CWE-125
- Affected product: Deltaww Commgr2
- Published:
- Last modified:
Description
Delta Electronics COMMGR2 has Buffer Over-read DoS vulnerability.
Frequently asked questions
- What is CVE-2026-3631?
- Delta Electronics COMMGR2 has Buffer Over-read DoS vulnerability.
- How severe is CVE-2026-3631?
- CVE-2026-3631 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-3631 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-3631?
- CVE-2026-3631 affects Deltaww Commgr2. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-3631?
- 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-2026-3631 have an EU (EUVD) identifier?
- Yes. CVE-2026-3631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10287.
- When was CVE-2026-3631 published?
- CVE-2026-3631 was published on 2026-03-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:deltaww:commgr2:*:*:*:*:*:*:*:*
More vulnerabilities in Deltaww Commgr2
- CVE-2026-3630 — Critical (CVSS 9.8): Delta Electronics COMMGR2 has Stack-based Buffer Overflow vulnerability.
All CVEs affecting Deltaww Commgr2 →
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