Highest advisory severityHigh 2 vendors · 2 advisories

CVE-2025-9900: Libtiff Vulnerability in NetApp Products

Not in the CISA KEV catalog. High advisory severity (CVSS 8.8, NetApp).

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

CVE-2025-9900 key facts

CISA KEV: Not listed (catalog checked Nov 10, 2026)
Highest advisory severity: High
CVSS base score: 8.8 (NetApp), 8.8 (Red Hat)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (Red Hat)
Weakness: CWE-123
Fixed releases: Red Hat: libtiff-0:4.6.0-6.el10_0.1, libtiff-0:4.6.0-6.el10_1.1, compat-libtiff3-0:3.9.4-12.el7_9.1, libtiff-0:4.0.3-35.el7_9.1, compat-libtiff3-0:3.9.4-14.el8_10, libtiff-0:4.0.9-35.el8_10 and 44 more in the advisory
Vendor advisories: 2 from NetApp, Red Hat
VulniPulse record: Published Sep 23, 2026 · Updated Nov 3, 2026

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2025-9900; bulletin-wide values are not repeated here.

Is CVE-2025-9900 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2025-9900 is not in the CISA KEV catalog (checked Nov 10, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2025-9900?

Upgrade to a fixed release named by the vendor:

Red Hat: libtiff-0:4.6.0-6.el10_0.1, libtiff-0:4.6.0-6.el10_1.1, compat-libtiff3-0:3.9.4-12.el7_9.1, libtiff-0:4.0.3-35.el7_9.1, compat-libtiff3-0:3.9.4-14.el8_10, libtiff-0:4.0.9-35.el8_10

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. (Red Hat)

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Alert me about NetApp

Vendor advisory comparison

NetApp

1 advisory

Advisory severityHigh8.8
High [CVE-2025-9900] Libtiff Vulnerability in NetApp Products
NTAP-20260109-0012Source published Jan 9, 2026Source updated Sep 25, 2026
Multiple NetApp products incorporate Libtiff. Libtiff versions through 4.7.0 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS). NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.
Affected products in this advisory
No product details extracted. Check the source bulletin.
Source-reported affected versions
4.7.0
Source-reported fixed versions
No fixed-version detail extracted. This does not mean no fix exists.
Mitigation guidance
No mitigation guidance extracted; consult the source.
Full advisory and evidence Open source bulletin

Red Hat

1 advisory

Advisory severityHigh8.8
High [CVE-2025-9900] Libtiff: libtiff write-what-where
CVE-2025-9900Source published Sep 23, 2025Source updated Sep 22, 2025
A flaw was found in Libtiff. This vulnerability is a "write-what-where" condition, triggered when the library processes a specially crafted TIFF image file. By providing an abnormally large image height value in the file's metadata, an attacker can trick the library into writing attacker-controlled color data to an arbitrary memory location. This memory corruption can be exploited to cause a denial of service (application crash) or to achieve arbitrary code execution with the permissions of the user. This attack requires user interaction to run the malicious TIFF image file, hence the CVE is maintained as important. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-123.
Affected products in this advisory
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat Enterprise Linux 8.2 Advanced Update Support
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
17 more entries in the full advisory.
Source-reported affected versions
Affected-version details not available in this record.
Source-reported fixed versions
libtiff-0:4.6.0-6.el10_0.1
libtiff-0:4.6.0-6.el10_1.1
compat-libtiff3-0:3.9.4-12.el7_9.1
libtiff-0:4.0.3-35.el7_9.1
46 more entries in the full advisory.
Mitigation guidance
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Full advisory and evidence Open source bulletin

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