How severe is CVE-2016-9534?

CVE-2016-9534 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-9534 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-9534?

CVE-2016-9534 affects Libtiff. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-9534?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-9534 published?

CVE-2016-9534 was published on 2016-11-22 and last updated on 2026-06-17.

CVE-2016-9534

CVE-2016-9534 is a critical-severity vulnerability in Libtiff with a CVSS 3.x base score of 9.8. 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Libtiff
Published: 2016-11-22
Last modified: 2026-06-17

Description

tif_write.c in libtiff 4.0.6 has an issue in the error code path of TIFFFlushData1() that didn't reset the tif_rawcc and tif_rawcp members. Reported as MSVR 35095, aka "TIFFFlushData1 heap-buffer-overflow."

Frequently asked questions

What is CVE-2016-9534?: tif_write.c in libtiff 4.0.6 has an issue in the error code path of TIFFFlushData1() that didn't reset the tif_rawcc and tif_rawcp members. Reported as MSVR 35095, aka "TIFFFlushData1 heap-buffer-overflow."
How severe is CVE-2016-9534?: CVE-2016-9534 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-9534 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-9534?: CVE-2016-9534 affects Libtiff. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-9534?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-9534 published?: CVE-2016-9534 was published on 2016-11-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libtiff:libtiff:4.0.6:*:*:*:*:*:*:*

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