Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%

Buy Us a Coffee

CVE-2026-40335— libgphoto2 has OOB read in ptp_unpack_DPV() UINT128/INT128 handling in ptp-pack.c

Quick assessment

Affected

gphoto libgphoto2

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libgphoto2是gPhoto开源的一个数码相机访问与控制库。 libgphoto2 2.5.33及之前版本存在安全漏洞，该漏洞源于ptp_unpack_DPV函数缺少边界验证，可能导致越界读取。

CVSS 5.2 · Medium EPSS 0.20% · P9 Updated Apr 20, 2026

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-40335

Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

libgphoto2 has OOB read in ptp_unpack_DPV() UINT128/INT128 handling in ptp-pack.c

Source: CVE Program / CVE List V5

Vulnerability Description

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read in `ptp_unpack_DPV()` in `camlibs/ptp2/ptp-pack.c` (lines 622–629). The UINT128 and INT128 cases advance `*offset += 16` without verifying that 16 bytes remain in the buffer. The entry check at line 609 only guarantees `*offset < total` (at least 1 byte available), leaving up to 15 bytes unvalidated. Commit 433bde9888d70aa726e32744cd751d7dbe94379a patches the issue.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

跨界内存读

Source: CVE Program / CVE List V5

Vulnerability Title

libgphoto2 安全漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
gphoto	libgphoto2	<= 2.5.33	-

II. Public POCs for CVE-2026-40335

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-40335

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-40335 (1)

🔗 Fixed UINT128/INT128 Unchecked Offset Advance (CWE-125) — MEDIUM · gphoto/libgphoto2@433bde9 · GitHub x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2026-40335

Same Patch Batch · gphoto · 2026-04-17 · 8 CVEs total

CVE-2026-40340	6.1 MEDIUM	libgphoto2 has OOB read in ptp_unpack_OI() in ptp-pack.c via malicious PTP ObjectInfo resp
CVE-2026-40333	6.1 MEDIUM	libgphoto2 has OOB read in ptp_unpack_EOS_ImageFormat() and ptp_unpack_EOS_CustomFuncEx()
CVE-2026-40339	5.2 MEDIUM	libgphoto2 has OOB read in ptp_unpack_Sony_DPD() FormFlag parsing in ptp-pack.c
CVE-2026-40338	5.2 MEDIUM	libgphoto2 has OOB read in ptp_unpack_Sony_DPD() enumeration count parsing in ptp-pack.c
CVE-2026-40334	3.5 LOW	libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c
CVE-2026-40341	3.5 LOW	libgphoto2 has an OOB Read in ptp_unpack_EOS_FocusInfoEx
CVE-2026-40336	2.4 LOW	libgphoto2 has memory leak in ptp_unpack_Sony_DPD() secondary enumeration list in ptp-pack

IV. Related Vulnerabilities

Same product: libgphoto2

Same vendor: gphoto

Same weakness: CWE-125