CVE-2023-4491
CVE-2023-4491 is a critical-severity vulnerability in Easy Address Book Web Server Project Easy Address Book Web Server 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-119.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 1% (55th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Easy Address Book Web Server Project Easy Address Book Web Server
- Published:
- Last modified:
Description
Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST request, resulting in arbitrary code execution on the remote machine.
Frequently asked questions
- What is CVE-2023-4491?
- Buffer overflow vulnerability in Easy Address Book Web Server 1.6 version. The exploitation of this vulnerability could allow an attacker to send a very long username string to /searchbook.ghp, asking for the name via a POST request, resulting in arbitrary code execution on the remote machine.
- How severe is CVE-2023-4491?
- CVE-2023-4491 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-2023-4491 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-2023-4491?
- CVE-2023-4491 affects Easy Address Book Web Server Project Easy Address Book Web Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-4491?
- 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-2023-4491 published?
- CVE-2023-4491 was published on 2023-10-04 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:easy_address_book_web_server_project:easy_address_book_web_server:1.6:*:*:*:*:*:*:*
More vulnerabilities in Easy Address Book Web Server Project Easy Address Book Web Server
- CVE-2023-4493 — Medium (CVSS 6.1): Stored Cross-Site Scripting in Easy Address Book Web Server 1.6 version, through the users_admin.ghp file that affects…
- CVE-2023-4492 — Medium (CVSS 6.1): Vulnerability in Easy Address Book Web Server 1.6 version, affecting the parameters (firstname, homephone, lastname,…
All CVEs affecting Easy Address Book Web Server Project Easy Address Book Web Server →
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