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CVE-2023-5552

24
FAUCET Score

CVE-2023-5552 is a password disclosure vulnerability affecting Sophos Firewall version 19.5 MR3 (19.5.3) and older, specifically within the Secure PDF eXchange (SPX) feature when the password type is set to “Specified by sender”. This allows an attacker with full email access to decrypt protected PDFs. The vulnerability has a CVSS score of 7.5 (HIGH), indicating a significant risk. It is remotely exploitable with low attack complexity, requiring no user interaction, and could lead to high confidentiality impact by exposing sensitive information within the PDFs. Currently, there is no evidence of active exploitation, nor is there any public exploit code available in Metasploit, Nuclei, or ExploitDB. The vulnerability has also received minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 19.5.3CPE matchmatch criteria
cpe:2.3:a:sophos:firewall:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.5
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 18th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

sophos.com / en-us/security-advisories/sophos-sa-20231017-spx-password
Vendor Advisory