VDB-416804 · CVE-2026-108985 · EUVD-2026-97165

sahlberg libnfs up to 6.0.2 ZDR Decoding lib/libnfs-zdr.c maxsize out-of-bounds write

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1	$0-$5k	3.88

Summaryinfo

A vulnerability labeled as problematic has been found in sahlberg libnfs up to 6.0.2. This vulnerability affects the function libnfs_zdr_bytes/libnfs_zdr_string/libnfs_zdr_array of the file lib/libnfs-zdr.c of the component ZDR Decoding. Such manipulation of the argument maxsize leads to out-of-bounds write. This vulnerability is traded as CVE-2026-108985. The attack may be launched remotely. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in sahlberg libnfs up to 6.0.2 and classified as problematic. Affected by this issue is the function libnfs_zdr_bytes/libnfs_zdr_string/libnfs_zdr_array of the file lib/libnfs-zdr.c of the component ZDR Decoding. The manipulation of the argument maxsize with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is integrity, and availability. CVE summarizes:

ZDR decoding in libnfs through 6.0.2 before 7613236 has an out-of-bounds write related to lib/libnfs-zdr.c with libnfs_zdr_bytes(), libnfs_zdr_string(), and libnfs_zdr_array(). The caller-supplied maxsize value is not honored.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-108985 since 10/12/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Applying the patch 7613236464317bee2d9636f087f995148de4db27 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-97165). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

sahlberg

Name

libnfs

Version

Website

Product: https://github.com/sahlberg/libnfs/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.1
CNA Vector (MITRE): 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 7613236464317bee2d9636f087f995148de4db27

Timelineinfo

10/12/2026 Advisory disclosed
10/12/2026 +0 days CVE reserved
10/12/2026 +0 days VulDB entry created
10/12/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-108985 (🔒)
GCVE (CVE): GCVE-0-2026-108985
GCVE (VulDB): GCVE-100-416804
EUVD: 🔒

Entryinfo

Created: 10/12/2026 05:32
Updated: 10/12/2026 06:27
Changes: 10/12/2026 05:32 (67), 10/12/2026 06:27 (1)
Complete: 🔍
Cache ID: 216::103