How severe is CVE-2017-8400?

CVE-2017-8400 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-2017-8400 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8400?

CVE-2017-8400 affects Swftools. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8400?

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-2017-8400 published?

CVE-2017-8400 was published on 2017-05-01 and last updated on 2026-06-17.

CVE-2017-8400

CVE-2017-8400 is a high-severity vulnerability in Swftools 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. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Swftools
Published: 2017-05-01
Last modified: 2026-06-17

Description

In SWFTools 0.9.2, an out-of-bounds write of heap data can occur in the function png_load() in lib/png.c:755. This issue can be triggered by a malformed PNG file that is mishandled by png2swf. Attackers could exploit this issue for DoS; it might cause arbitrary code execution.

Frequently asked questions

What is CVE-2017-8400?: In SWFTools 0.9.2, an out-of-bounds write of heap data can occur in the function png_load() in lib/png.c:755. This issue can be triggered by a malformed PNG file that is mishandled by png2swf. Attackers could exploit this issue for DoS; it might cause arbitrary code execution.
How severe is CVE-2017-8400?: CVE-2017-8400 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-2017-8400 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8400?: CVE-2017-8400 affects Swftools. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8400?: 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-2017-8400 published?: CVE-2017-8400 was published on 2017-05-01 and last updated on 2026-06-17.

References

https://github.com/matthiaskramm/swftools/issues/13

Affected products (1)

cpe:2.3:a:swftools:swftools:*:*:*:*:*:*:*:*

More vulnerabilities in Swftools

CVE-2022-40009 — Critical (CVSS 9.8): SWFTools commit 772e55a was discovered to contain a heap-use-after-free via the function grow_unicode at /lib/ttf.c.
CVE-2022-40008 — Critical (CVSS 9.8): SWFTools commit 772e55a was discovered to contain a heap-buffer overflow via the function readU8 at /lib/ttf.c.
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