CVE-2026-40977

MEDIUM

6.7

CVSS Score

Published: April 27, 2026 at 11:36 PM UTC

Updated: July 24, 2026 at 09:20 PM UTC

2 products affected across 2 vendorsSpring BootSpring Boot

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Severity

MEDIUM6.7

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring Boot · VMware

95%

v < 2.7.333.3.0 ≤ v < 3.3.193.4.0 ≤ v < 3.4.163.5.0 ≤ v < 3.5.144.0.0 ≤ v < 4.0.6

Affected range stops below 2.7.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.3.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.4.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.5.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.0.6, so it looks safe — our inference, not a vendor statement

Spring Boot · Spring

60%

2.7.0 ≤ v < 2.7.333.3.0 ≤ v < 3.3.193.4.0 ≤ v < 3.4.163.5.0 ≤ v < 3.5.144.0.0 ≤ v < 4.0.62.7.0 3.3.0 3.4.0 3.5.0 4.0.0

Affected range stops below 2.7.33, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.3.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.4.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.5.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.0.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://spring.io/security/cve-2026-40977

References (1)

Vendor Advisory

Source: cverecord

https://spring.io/security/cve-2026-40977

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.7MEDIUM[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-59

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