How severe is CVE-2023-43251?

CVE-2023-43251 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-43251 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43251?

CVE-2023-43251 affects Xnview Nconvert. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-43251?

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.

When was CVE-2023-43251 published?

CVE-2023-43251 was published on 2023-10-19 and last updated on 2026-06-17.

CVE-2023-43251

CVE-2023-43251 is a high-severity vulnerability in Xnview Nconvert with a CVSS 3.x base score of 7.8. 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-755.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Xnview Nconvert
Published: 2023-10-19
Last modified: 2026-06-17

Description

XNSoft Nconvert 7.136 has an Exception Handler Chain Corrupted via a crafted image file. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution.

Frequently asked questions

What is CVE-2023-43251?: XNSoft Nconvert 7.136 has an Exception Handler Chain Corrupted via a crafted image file. Attackers could exploit this issue for a Denial of Service (DoS) or possibly to achieve code execution.
How severe is CVE-2023-43251?: CVE-2023-43251 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-43251 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43251?: CVE-2023-43251 affects Xnview Nconvert. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43251?: 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.
When was CVE-2023-43251 published?: CVE-2023-43251 was published on 2023-10-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xnview:nconvert:7.136:*:*:*:*:*:*:*

More vulnerabilities in Xnview Nconvert

CVE-2023-43252 — High (CVSS 7.8): XNSoft Nconvert 7.136 is vulnerable to Buffer Overflow via a crafted image file.
CVE-2023-43250 — High (CVSS 7.8): XNSoft Nconvert 7.136 is vulnerable to Buffer Overflow. There is a User Mode Write AV via a crafted image file.…
CVE-2024-22532 — Medium (CVSS 6.5): Buffer Overflow vulnerability in XNSoft NConvert 7.163 (for Windows x86) allows attackers to cause a denial of service…
CVE-2026-30007 — Medium (CVSS 6.2): XnSoft NConvert 7.230 is vulnerable to Use-After-Free via a crafted .tiff file
CVE-2026-30006 — Medium (CVSS 6.2): XnSoft NConvert 7.230 is vulnerable to Stack Buffer Overrun via a crafted .tiff file.

All CVEs affecting Xnview Nconvert →

Other CWE-755 (Improper Handling of Exceptional Conditions) vulnerabilities

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CVE-2021-42141 — Critical (CVSS 9.8): An issue was discovered in Contiki-NG tinyDTLS through 2018-08-30. One incorrect handshake could complete with…
CVE-2023-38406 — Critical (CVSS 9.8): bgpd/bgp_flowspec.c in FRRouting (FRR) before 8.4.3 mishandles an nlri length of zero, aka a "flowspec overflow."
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Browse all CWE-755 (Improper Handling of Exceptional Conditions) vulnerabilities →