CVE-2023-29545

MEDIUM

6.5

CVSS Score

Published: June 19, 2023 at 10:07 AM UTC

Updated: October 24, 2026 at 01:10 PM UTC

3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

Similar to CVE-2023-28163, this time when choosing 'Save Link As', suggested filenames containing environment variable names would have resolved those in the context of the current user. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.

Affected

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

Firefox · Mozilla

95%

v < 112.0

Affected range stops below 112, so it looks safe — our inference, not a vendor statement

Affected range stops below 112.0, so it looks safe — our inference, not a vendor statement

Firefox ESR · Mozilla

95%

v < 102.10

Affected range stops below 102.10, so it looks safe — our inference, not a vendor statement

Thunderbird · Mozilla

95%

v < 102.10

Affected range stops below 102.10, 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

References (4)

Permissions Required

Source: [email protected]

https://bugzilla.mozilla.org/show_bug.cgi?id=1823077

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2023-13/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2023-14/

Vendor Advisory

Source: [email protected]

https://www.mozilla.org/security/advisories/mfsa2023-15/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

6.5MEDIUMCISA-ADP

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

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfo

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