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Vulnerability record · CVE-2025-9165 · published 19 August 2025

CVE-2025-9165: Libtiff memory leak vulnerability

Libtiff · Libtiff

A flaw has been found in LibTIFF 4.7.0. This affects the function _TIFFmallocExt/_TIFFCheckRealloc/TIFFHashSetNew/InitCCITTFax3 of the file tools/tiffcmp.c of the component tiffcmp. Executing manipulation can lead to memory leak. The attack is restricted to local execution. This attack is characterized by high complexity. It is indicated that the exploitability is difficult. The exploit has been published and may be used. There is ongoing doubt regarding the real existence of this vulnerability. This patch is called ed141286a37f6e5ddafb5069347ff5d587e7a4e0. It is best practice to apply a patch to resolve this issue. A researcher disputes the security impact of this issue, because "this is a memory leak on a command line tool that is about to exit anyway". In the reply the project maintainer declares this issue as "a simple 'bug' when leaving the command line tool and (...) not a security issue at all".

1.1 CVSS 4.0 Low EPSS 0.22% · top 89.1% CWE-401 · Memory leakCWE-404 · Improper resource shutdown
1.1CVSS 4.0 base score, v2 1.0
0.22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 3 tagged exploit
17 Jun 2026Last modified by NVD

Description

A flaw has been found in LibTIFF 4.7.0. This affects the function _TIFFmallocExt/_TIFFCheckRealloc/TIFFHashSetNew/InitCCITTFax3 of the file tools/tiffcmp.c of the component tiffcmp. Executing manipulation can lead to memory leak. The attack is restricted to local execution. This attack is characterized by high complexity. It is indicated that the exploitability is difficult. The exploit has been published and may be used. There is ongoing doubt regarding the real existence of this vulnerability. This patch is called ed141286a37f6e5ddafb5069347ff5d587e7a4e0. It is best practice to apply a patch to resolve this issue. A researcher disputes the security impact of this issue, because "this is a memory leak on a command line tool that is about to exit anyway". In the reply the project maintainer declares this issue as "a simple 'bug' when leaving the command line tool and (...) not a security issue at all".

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.libtiff.org/ Product
https://drive.google.com/file/d/1FWhmkzksH8-qU0ZM6seBzGNB3aPnX3G8/view?usp=sharing Exploit
https://gitlab.com/libtiff/libtiff/-/commit/ed141286a37f6e5ddafb5069347ff5d587e7a4e0 Patch
https://gitlab.com/libtiff/libtiff/-/issues/728 ExploitIssue TrackingVendor Advisory
https://gitlab.com/libtiff/libtiff/-/merge_requests/747 Issue TrackingPatchVendor Advisory
https://vuldb.com/?ctiid.320543 Permissions RequiredVDB Entry
https://vuldb.com/?id.320543 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.630506 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.630507 Third Party AdvisoryVDB Entry
https://gitlab.com/libtiff/libtiff/-/issues/728#note_2709263214 ExploitIssue TrackingVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2004-0929Libtiff vulnerabilityHeap-based buffer overflow in the OJPEGVSetField function in tif_ojpeg.c for libtiff 3.6.1 and earlier, when compiled with the OJPEG_SUPPORT (old JPE…EPSS 8.2%10.0CVE-2004-1308Libtiff vulnerabilityInteger overflow in (1) tif_dirread.c and (2) tif_fax3.c for libtiff 3.5.7 and 3.7.0 allows remote attackers to execute arbitrary code via a TIFF fil…EPSS 15%9.8CVE-2016-9540Libtiff memory buffer overflow vulnerabilitytools/tiffcp.c in libtiff 4.0.6 has an out-of-bounds write on tiled images with odd tile width versus image width. Reported as MSVR 35103, aka "cpStr…EPSS 3.6%9.8CVE-2016-9539Libtiff memory buffer overflow vulnerabilitytools/tiffcrop.c in libtiff 4.0.6 has an out-of-bounds read in readContigTilesIntoBuffer(). Reported as MSVR 35092.EPSS 3.0%9.8CVE-2016-9538Libtiff integer overflow vulnerabilitytools/tiffcrop.c in libtiff 4.0.6 reads an undefined buffer in readContigStripsIntoBuffer() because of a uint16 integer overflow. Reported as MSVR 35…EPSS 3.4%9.8CVE-2016-9537Libtiff memory buffer overflow vulnerabilitytools/tiffcrop.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in buffers. Reported as MSVR 35093, MSVR 35096, and MSVR 35097.EPSS 3.1%9.8CVE-2016-9536Libtiff memory buffer overflow vulnerabilitytools/tiff2pdf.c in libtiff 4.0.6 has out-of-bounds write vulnerabilities in heap allocated buffers in t2p_process_jpeg_strip(). Reported as MSVR 350…EPSS 3.1%9.8CVE-2016-9535Libtiff memory buffer overflow vulnerabilitytif_predict.h and tif_predict.c in libtiff 4.0.6 have assertions that can lead to assertion failures in debug mode, or buffer overflows in release mo…EPSS 4.8%

Source: NIST National Vulnerability Database (record CVE-2025-9165), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.