How severe is CVE-2007-5378?

CVE-2007-5378 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2007-5378 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-5378?

CVE-2007-5378 affects Tcl Tk Tk Toolkit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-5378?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2007-5378 published?

CVE-2007-5378 was published on 2007-10-12 and last updated on 2026-06-16.

CVE-2007-5378

CVE-2007-5378 is a medium-severity vulnerability in Tcl Tk Tk Toolkit with a CVSS 2.0 base score of 4.3. 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: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Tcl Tk Tk Toolkit
Published: 2007-10-12
Last modified: 2026-06-16

Description

Buffer overflow in the FileReadGIF function in tkImgGIF.c for Tk Toolkit 8.4.12 and earlier, and 8.3.5 and earlier, allows user-assisted attackers to cause a denial of service (segmentation fault) via an animated GIF in which the first subimage is smaller than a subsequent subimage, which triggers the overflow in the ReadImage function, a different vulnerability than CVE-2007-5137.

Frequently asked questions

What is CVE-2007-5378?: Buffer overflow in the FileReadGIF function in tkImgGIF.c for Tk Toolkit 8.4.12 and earlier, and 8.3.5 and earlier, allows user-assisted attackers to cause a denial of service (segmentation fault) via an animated GIF in which the first subimage is smaller than a subsequent subimage, which triggers the overflow in the ReadImage function, a different vulnerability than CVE-2007-5137.
How severe is CVE-2007-5378?: CVE-2007-5378 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-5378 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-5378?: CVE-2007-5378 affects Tcl Tk Tk Toolkit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-5378?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-5378 published?: CVE-2007-5378 was published on 2007-10-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:tcl_tk:tk_toolkit:*:*:*:*:*:*:*:*

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