Medium severity · published Feb 23, 2026
CVE-2025-61143
libtiff up to v4.7.1 was discovered to contain a NULL pointer dereference via the component libtiff/tif_open.c
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
libtiff up to v4.7.1 was discovered to contain a NULL pointer dereference via the component libtiff/tif_open.c.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libtiff · Libtiff
before 4.7.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61143
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-61143
Third Party Advisory
https://gist.github.com/optionGo/9c024cd8e7b131463b84dc60af9bb0aa
Issue Tracking
https://gitlab.com/libtiff/libtiff/-/issues/737
Issue Tracking
https://gitlab.com/libtiff/libtiff/-/merge_requests/755
More from Libtiff
9.8
CVE-2016-9540
tools/tiffcp.c in libtiff 4.0.6 has an out-of-bounds write on tiled images with odd tile width versus image width
9.8
CVE-2016-9539
tools/tiffcrop.c in libtiff 4.0.6 has an out-of-bounds read in readContigTilesIntoBuffer()
9.8
CVE-2016-9538
tools/tiffcrop.c in libtiff 4.0.6 reads an undefined buffer in readContigStripsIntoBuffer() because of a uint16 integer overflow
9.8
CVE-2016-9537
tools/tiffcrop.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in buffers
9.8
CVE-2016-9536
tools/tiff2pdf.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in heap allocated buffers in t2p_process_jpeg_strip()