Home/CVE/When an application is configured to use `ApplicationPidFileWriter`, a local attacker with write access to the PID file'
CVE

CVE-2026-40977

When an application is configured to use `ApplicationPidFileWriter`, a local attacker with write access to the PID file'

When an application is configured to use ApplicationPidFileWriter, a local attacker with write access to the PID file's location can corrupt one file on the host each time the application is started. Affected: Spring Boot 4.0.0-4.0.5 (fix 4.0.6), 3.5.0-3.5.13 (fix 3.5.14), 3.4.0-3.4.15 (fix 3.4.16), 3.3.0-3.3.18 (fix 3.3.19), 2.7.0-2.7.32 (fix 2.7.33)

PID file / symlink behavior (ApplicationPidFileWriter). Versions that are no longer supported are also affected per vendor advisory.

MEDIUM · CVSS 4.7 EPSS 0.0002
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-59Improper Link Resolution Before File Access ('Link Following')
▤

Affected Products & Versions

5
vmware spring boot< 2.7.33
vmware spring boot>= 3.3.0 and < 3.3.19
vmware spring boot>= 3.4.0 and < 3.4.16
vmware spring boot>= 3.5.0 and < 3.5.14
vmware spring boot>= 4.0.0 and < 4.0.6
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.springframework.boot:spring-boot-cassandra MODERATE fixed in 4.0.6
▣

Scoring & Timeline

4.7
MEDIUM · CVSS v3.1 · security@vmware.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Apr 2026 · 12:16 AM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://spring.io/security/cve-2026-40977Vendor Advisory
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