How severe is CVE-2015-7801?

CVE-2015-7801 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-7801 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7801?

CVE-2015-7801 primarily affects Optipng Project Optipng. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-7801?

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-2015-7801 published?

CVE-2015-7801 was published on 2016-04-20 and last updated on 2026-06-17.

CVE-2015-7801

CVE-2015-7801 is a high-severity vulnerability in Optipng Project Optipng with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.3
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Optipng Project Optipng
Published: 2016-04-20
Last modified: 2026-06-17

Description

Use-after-free vulnerability in OptiPNG 0.6.4 allows remote attackers to execute arbitrary code via a crafted PNG file.

Frequently asked questions

What is CVE-2015-7801?: Use-after-free vulnerability in OptiPNG 0.6.4 allows remote attackers to execute arbitrary code via a crafted PNG file.
How severe is CVE-2015-7801?: CVE-2015-7801 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-7801 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7801?: CVE-2015-7801 primarily affects Optipng Project Optipng. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-7801?: 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-2015-7801 published?: CVE-2015-7801 was published on 2016-04-20 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:optipng_project:optipng:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*

More vulnerabilities in Optipng Project Optipng

CVE-2016-3982 — High (CVSS 8.8): Off-by-one error in the bmp_rle4_fread function in pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause…
CVE-2023-43907 — High (CVSS 7.8): OptiPNG v0.7.7 was discovered to contain a global buffer overflow via the 'buffer' variable at gifread.c.
CVE-2017-16938 — High (CVSS 7.8): A global buffer overflow in OptiPNG 0.7.6 allows remote attackers to cause a denial-of-service attack or other…
CVE-2017-1000229 — High (CVSS 7.8): Integer overflow bug in function minitiff_read_info() of optipng 0.7.6 allows an attacker to remotely execute code or…
CVE-2016-3981 — High (CVSS 7.8): Heap-based buffer overflow in the bmp_read_rows function in pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers…
CVE-2009-0749 — High (CVSS 7.8): Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and…

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