How severe is CVE-2018-17795?

CVE-2018-17795 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-2018-17795 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17795?

CVE-2018-17795 affects Libtiff. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17795?

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-2018-17795 published?

CVE-2018-17795 was published on 2018-09-30 and last updated on 2026-06-17.

CVE-2018-17795

CVE-2018-17795 is a high-severity vulnerability in Libtiff 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: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Libtiff
Published: 2018-09-30
Last modified: 2026-06-17

Description

The function t2p_write_pdf in tiff2pdf.c in LibTIFF 4.0.9 and earlier allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted TIFF file, a similar issue to CVE-2017-9935.

Frequently asked questions

What is CVE-2018-17795?: The function t2p_write_pdf in tiff2pdf.c in LibTIFF 4.0.9 and earlier allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted TIFF file, a similar issue to CVE-2017-9935.
How severe is CVE-2018-17795?: CVE-2018-17795 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-2018-17795 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17795?: CVE-2018-17795 affects Libtiff. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17795?: 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-2018-17795 published?: CVE-2018-17795 was published on 2018-09-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libtiff:libtiff:4.0.9:*:*:*:*:*:*:*

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CVE-2016-9540 — Critical (CVSS 9.8): tools/tiffcp.c in libtiff 4.0.6 has an out-of-bounds write on tiled images with odd tile width versus image width.…
CVE-2016-9539 — Critical (CVSS 9.8): tools/tiffcrop.c in libtiff 4.0.6 has an out-of-bounds read in readContigTilesIntoBuffer(). Reported as MSVR 35092.
CVE-2016-9538 — Critical (CVSS 9.8): tools/tiffcrop.c in libtiff 4.0.6 reads an undefined buffer in readContigStripsIntoBuffer() because of a uint16 integer…
CVE-2016-9537 — Critical (CVSS 9.8): tools/tiffcrop.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in buffers. Reported as MSVR 35093, MSVR…

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