CVE-2015-3202: fusermount in FUSE before 2.9.3-15 does not properly clear the environment before invoking (1) mount or (2) umount as root, which allows…
Noroxi assessment
Priority: Monitor (action score 14/100)
- Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 1% (FIRST EPSS); higher than 63.4% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: fuse (Debian:12) 2.9.3-16; ntfs-3g (Debian:12) 1:2014.2.15AR.3-3; fuse (Debian:6.0) 2.8.4-1.1+deb6u1.
Low priority for now. Upgrade to fuse (Debian:12) 2.9.3-16; ntfs-3g (Debian:12) 1:2014.2.15AR.3-3; fuse (Debian:6.0) 2.8.4-1.1+deb6u1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
fusermount in FUSE before 2.9.3-15 does not properly clear the environment before invoking (1) mount or (2) umount as root, which allows local users to write to arbitrary files via a crafted LIBMOUNT_MTAB environment variable that is used by mount's debugging feature.
- Published
- Jul 2, 2015
- Updated
- Jun 16, 2026
- EPSS
- 1.0% · 63th percentile
- CWE
- CWE-264
Report tools
Action score
14
Low priority for now.
- CVSS
- 14 / 40 · 3.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.0%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| fuse project | fuse | cpe:2.3:a:fuse_project:fuse |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux8.0
- fuse project fuseup to 2.9.2 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | fuse | before 2.9.3-16 | 2.9.3-16 |
| Debian:12 | ntfs-3g | before 1:2014.2.15AR.3-3 | 1:2014.2.15AR.3-3 |
| Debian:6.0 | fuse | before 2.8.4-1.1+deb6u1 | 2.8.4-1.1+deb6u1 |
| Debian:6.0 | ntfs-3g | before 1:2010.3.6-1+deb6u1 | 1:2010.3.6-1+deb6u1 |
| Debian:6.0 | ntfs-3g | before 1:2010.3.6-1+deb6u2 | 1:2010.3.6-1+deb6u2 |
| Debian:7 | fuse | before 2.9.0-2+deb7u2 | 2.9.0-2+deb7u2 |
| Debian:7 | ntfs-3g | before 1:2012.1.15AR.5-2.1+deb7u1 | 1:2012.1.15AR.5-2.1+deb7u1 |
| Debian:7 | ntfs-3g | before 1:2012.1.15AR.5-2.1+deb7u2 | 1:2012.1.15AR.5-2.1+deb7u2 |
| Debian:8 | fuse | before 2.9.3-15+deb8u1 | 2.9.3-15+deb8u1 |
| Debian:8 | ntfs-3g | before 1:2014.2.15AR.2-1+deb8u1 | 1:2014.2.15AR.2-1+deb8u1 |
| Debian:8 | ntfs-3g | before 1:2014.2.15AR.2-1+deb8u2 | 1:2014.2.15AR.2-1+deb8u2 |
| openSUSE:Tumbleweed | fuse | before 2.9.5-1.6 | 2.9.5-1.6 |
| SUSE:Linux Enterprise Desktop 12 | fuse | before 2.9.3-5.1 | 2.9.3-5.1 |
Same product
debian: all recordsOther highest-scoring records for the same primary product.
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Published before and after this one in the same product
- ← EarlierCVE-2015-1822Apr 16, 2015 · chrony before 1.31.1 does not initialize the last "next" pointer when saving unacknowledged replies to command requests, which allows…27Monitor
- ← EarlierCVE-2015-0971May 14, 2015 · The DER parser in Suricata before 2.0.8 allows remote attackers to cause a denial of service (crash) via vectors related to SSL/TLS…20Monitor
- Later →CVE-2015-1286Jul 22, 2015 · Cross-site scripting (XSS) vulnerability in the V8ContextNativeHandler::GetModuleSystem function in…18Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:fuse | 2.9.3-16 · Debian:12 | Package registry (OSV) |
| debian:ntfs-3g | 1:2014.2.15AR.3-3 · Debian:12 | Package registry (OSV) |
| opensuse:fuse | 2.9.5-1.6 · openSUSE:Tumbleweed | Package registry (OSV) |
| suse:fuse | 2.9.3-5.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | local | 2015-05-23 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-41 d
- Published
- TodayNov 14, 2026+4153 d
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-264 · Permissions, Privileges, and Access ControlsCVSS vector
AV:L/AC:L/Au:N/C:N/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (17 more)Show less
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159543.html
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159683.html
- lists.fedoraproject.org/pipermail/package-announce/2015-June/159831.html
- lists.fedoraproject.org/pipermail/package-announce/2015-June/160094.html
- lists.fedoraproject.org/pipermail/package-announce/2015-June/160106.html
- lists.opensuse.org/opensuse-updates/2015-06/msg00005.html
- lists.opensuse.org/opensuse-updates/2015-06/msg00007.html
- www.debian.org/security/2015/dsa-3266
- www.debian.org/security/2015/dsa-3268
- www.securityfocus.com/bid/74765
- www.securitytracker.com/id/1032386
- www.ubuntu.com/usn/USN-2617-1
- www.ubuntu.com/usn/USN-2617-2
- www.ubuntu.com/usn/USN-2617-3
- security.gentoo.org/glsa/201603-04
- security.gentoo.org/glsa/201701-19
- twitter.com/taviso/status/601370527437967360
Vendor advisories and official records. Exploit/PoC links are deliberately left out.