CVE-2019-7401
CVE-2019-7401 is a critical-severity vulnerability in F5 Nginx Unit with a CVSS 3.x base score of 9.8. 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-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: F5 Nginx Unit
- Published:
- Last modified:
Description
NGINX Unit before 1.7.1 might allow an attacker to cause a heap-based buffer overflow in the router process with a specially crafted request. This may result in a denial of service (router process crash) or possibly have unspecified other impact.
Frequently asked questions
- What is CVE-2019-7401?
- NGINX Unit before 1.7.1 might allow an attacker to cause a heap-based buffer overflow in the router process with a specially crafted request. This may result in a denial of service (router process crash) or possibly have unspecified other impact.
- How severe is CVE-2019-7401?
- CVE-2019-7401 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-7401 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-7401?
- CVE-2019-7401 affects F5 Nginx Unit. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-7401?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2019-7401 published?
- CVE-2019-7401 was published on 2019-02-08 and last updated on 2026-06-17.
References
- http://hg.nginx.org/unit/file/tip/CHANGES
- http://mailman.nginx.org/pipermail/unit/2019-February/000113.html
- http://unit.nginx.org/CHANGES.txt
- http://www.securityfocus.com/bid/106956
Affected products (1)
- cpe:2.3:a:f5:nginx_unit:*:*:*:*:*:*:*:*
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