Home/CVE/A password disclosure vulnerability in the Secure PDF eXchange (SPX) feature allows attackers with full email access to
CVE

CVE-2023-5552

A password disclosure vulnerability in the Secure PDF eXchange (SPX) feature allows attackers with full email access to

A password disclosure vulnerability in the Secure PDF eXchange (SPX) feature allows attackers with full email access to decrypt PDFs in Sophos Firewall version 19.5 MR3 (19.5.3) and older, if the password type is set to “Specified by sender”.

HIGH · CVSS 7.1 EPSS 0.00068
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-522Insufficiently Protected Credentials
▤

Affected Products & Versions

1
sophos firewall<= 19.5.3
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighDisable System Firewall
producthighSuspicious Program Location Whitelisted In Firewall Via Netsh.EXE
producthighNew Firewall Rule Added In Windows Firewall Exception List For Potential Suspicious Application
producthighAll Rules Have Been Deleted From The Windows Firewall Configuration
productmediumAzure Firewall Rule Collection Modified or Deleted
productmediumAzure Firewall Rule Configuration Modified or Deleted
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · security-alert@sophos.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 NVD18 Oct 2023 · 12:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
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://www.sophos.com/en-us/security-advisories/sophos-sa-20231017-spx-passwordVendor Advisory
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