CVE-2023-54334
CVE-2023-54334 is a critical-severity vulnerability in Explorerplusplus Explorer++ 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 v4: 7.0
- EPSS exploit prediction: 0% (39th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-2589
- Weakness: CWE-787
- Affected product: Explorerplusplus Explorer++
- Published:
- Last modified:
Description
Explorer32++ 1.3.5.531 contains a buffer overflow vulnerability in Structured Exception Handler (SEH) records that allows attackers to execute arbitrary code. Attackers can exploit the vulnerability by providing a long file name argument over 396 characters to corrupt the SEH chain and potentially execute malicious code.
Frequently asked questions
- What is CVE-2023-54334?
- Explorer32++ 1.3.5.531 contains a buffer overflow vulnerability in Structured Exception Handler (SEH) records that allows attackers to execute arbitrary code. Attackers can exploit the vulnerability by providing a long file name argument over 396 characters to corrupt the SEH chain and potentially execute malicious code.
- How severe is CVE-2023-54334?
- CVE-2023-54334 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-2023-54334 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-54334?
- CVE-2023-54334 affects Explorerplusplus Explorer++. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-54334?
- 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.
- Does CVE-2023-54334 have an EU (EUVD) identifier?
- Yes. CVE-2023-54334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2589.
- When was CVE-2023-54334 published?
- CVE-2023-54334 was published on 2026-01-13 and last updated on 2026-06-17.
References
- https://web.archive.org/web/20230205040401/http://www.explorerplusplus.com/
- https://www.exploit-db.com/exploits/51077
- https://www.vulncheck.com/advisories/explorer-buffer-overflow
Affected products (1)
- cpe:2.3:a:explorerplusplus:explorer\+\+:1.3.5.531:*:*:*:*:*:*:*
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