How severe is CVE-2018-7640?

CVE-2018-7640 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-2018-7640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7640?

CVE-2018-7640 affects Cimg. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-7640?

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-2018-7640 published?

CVE-2018-7640 was published on 2018-03-02 and last updated on 2026-06-17.

CVE-2018-7640

CVE-2018-7640 is a high-severity vulnerability in Cimg 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Cimg
Published: 2018-03-02
Last modified: 2026-06-17

Description

An issue was discovered in CImg v.220. A heap-based buffer over-read in load_bmp in CImg.h occurs when loading a crafted bmp image, a different vulnerability than CVE-2018-7588. This is in a Monochrome case, aka case 1.

Frequently asked questions

What is CVE-2018-7640?: An issue was discovered in CImg v.220. A heap-based buffer over-read in load_bmp in CImg.h occurs when loading a crafted bmp image, a different vulnerability than CVE-2018-7588. This is in a Monochrome case, aka case 1.
How severe is CVE-2018-7640?: CVE-2018-7640 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-2018-7640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7640?: CVE-2018-7640 affects Cimg. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-7640?: 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-2018-7640 published?: CVE-2018-7640 was published on 2018-03-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cimg:cimg:.220:*:*:*:*:*:*:*

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