CVE-2026-115377
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Symlink in Migration Stream
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
9.4
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Symlink in Migration Stream
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
- Record
CVE-2026-115377- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
EUVDEUVD-2026-108300
9.4
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
- Record
EUVD-2026-108300- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9c3h-632w-7845
9.4
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write...
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
- Record
GHSA-9c3h-632w-7845- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/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:X/V:X/RE:X/U:X - CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
NVD
9.4
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
- Record
CVE-2026-115377- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/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:X/V:X/RE:X/U:X - CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-59
- Updated
- 2026-11-02
OSV
9.4
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 Arbitrary File Write via Symlink in Migration Stream
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
- Record
CVE-2026-115377- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-59
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-115377
9.4
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
- Record
DEBIAN-CVE-2026-115377- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/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:X/V:X/RE:X/U:X - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-115377
9.4
Incus before 6.0.7, 6.1.0 before 7.0.2, and 7.1.0 before 7.5.0 contains an arbitrary file write vulnerability that allows malicious migration sources to write host files by planting symlinks in transferred volumes. Attackers can craft rsync or btrfs receive streams with a symlink such as rootfs pointing to the host root, writing files as root for full host compromise.
- Record
UBUNTU-CVE-2026-115377- CVSS 4.0
- 9.4 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - CVSS 3.1
- 9.9 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
incusDebian:13 |
before 6.0.4-2+deb13u11, plus listed versions 6.0.4-26.0.4-2+deb13u16.0.4-2+deb13u106.0.4-2+deb13u1~bpo12+16.0.4-2+deb13u2 Show 13 moreShow less6.0.4-2+deb13u2~bpo12+16.0.4-2+deb13u36.0.4-2+deb13u3~bpo12+16.0.4-2+deb13u46.0.4-2+deb13u4~bpo12+16.0.4-2+deb13u56.0.4-2+deb13u5~bpo12+16.0.4-2+deb13u66.0.4-2+deb13u6~bpo12+16.0.4-2+deb13u76.0.4-2+deb13u7~bpo12+16.0.4-2+deb13u86.0.4-2+deb13u9 |
6.0.4-2+deb13u11 |
incusDebian:14 |
before 7.0.1-5, plus listed versions 6.0.4-26.0.4-36.0.5-16.0.5-26.0.5-3 Show 32 moreShow less6.0.5-46.0.5-56.0.5-66.0.5-76.0.5-86.0.6-16.0.6-26.0.6-36.14.0-1~exp16.15.0-1~exp16.16.0-1~exp16.17.0-1~exp16.20.0-1~exp16.21.0-1~exp16.22.0-1~exp16.23.0-1~exp17.0.0-17.0.0-1~bpo13+17.0.0-27.0.0-2~bpo13+17.0.0-37.0.0-47.0.0-57.0.0-5~bpo13+17.0.1-17.0.1-1~bpo13+17.0.1-27.0.1-2~bpo13+17.0.1-37.0.1-3~bpo13+17.0.1-47.0.1-5~bpo13+1 |
7.0.1-5 |
incusUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 0.4-1ubuntu10.5.1-10.5.1-30.6-16.0.0-1 Show 7 moreShow less6.0.0-1ubuntu0.16.0.0-1ubuntu0.26.0.0-1ubuntu0.2+esm16.0.0-1ubuntu0.36.0.0-1ubuntu0.3+esm16.0.0-1ubuntu0.3+esm26.0.0-1ubuntu0.3+esm3 |
None known |
incusUbuntu:26.10 |
All versions, plus listed versions 6.0.5-87.0.1-5 |
None known |
incusUbuntu:Pro:26.04:LTS |
All versions, plus listed versions 6.0.4-26.0.5-86.0.5-8ubuntu0.26.04.1~esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-115377 is a critical vulnerability (CVSS 9.4) in Lxc Incus, published October 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. Fixed in incus 6.0.4-2+deb13u11.
References
github.com/lxc/incus/security/advisories/GHSA-579w-c4rw-c8q3
vulncheck.com/advisories/incus-before-6.0.7-6.1.0-before-7.0.2-and-7.1.0-before-7.5.0-arbitrary-file-write-via-symlink-in-migration-stream
nvd.nist.gov/vuln/detail/CVE-2026-115377
github.com/advisories/GHSA-9c3h-632w-7845
github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115377.json
security-tracker.debian.org/tracker/CVE-2026-115377
ubuntu.com/security/CVE-2026-115377
cve.org/CVERecord?id=CVE-2026-115377