How severe is CVE-2015-7802?

CVE-2015-7802 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2015-7802 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7802?

CVE-2015-7802 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-2015-7802?

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

When was CVE-2015-7802 published?

CVE-2015-7802 was published on 2016-04-20 and last updated on 2026-06-17.

CVE-2015-7802

CVE-2015-7802 is a medium-severity vulnerability in Optipng Project Optipng with a CVSS 3.x base score of 5.5. 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 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Optipng Project Optipng
Published: 2016-04-20
Last modified: 2026-06-17

Description

gifread.c in gif2png, as used in OptiPNG before 0.7.6, allows remote attackers to cause a denial of service (uninitialized memory read) via a crafted GIF file.

Frequently asked questions

What is CVE-2015-7802?: gifread.c in gif2png, as used in OptiPNG before 0.7.6, allows remote attackers to cause a denial of service (uninitialized memory read) via a crafted GIF file.
How severe is CVE-2015-7802?: CVE-2015-7802 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2015-7802 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7802?: CVE-2015-7802 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-2015-7802?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-7802 published?: CVE-2015-7802 was published on 2016-04-20 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:optipng_project:optipng:0.7.5:*:*:*:*:*:*:*
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-2015-7801 — High (CVSS 8.8): Use-after-free vulnerability in OptiPNG 0.6.4 allows remote attackers to execute arbitrary code via a crafted PNG file.
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…

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