CVE-2023-0655: SonicWall Email Security contains a vulnerability that could permit a remote unauthenticated attacker access t

Q: How do I fix CVE-2023-0655?

email security: upgrade to newer than 10.0.19.7431. Exact commands for each OS are on this page.

Q: Is CVE-2023-0655 being exploited?

CVE-2023-0655 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-0655 affect?

CVE-2023-0655 affects email security. Severity is medium (CVSS 5.3). SonicWall Email Security contains a vulnerability that could permit a remote unauthenticated attacker access to an error page that includes sensitive information about users email addresses.

Q: How urgent is CVE-2023-0655?

Priority 37/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 5.3REMOTEUPGRADE

CVE-2023-0655 is a medium-severity flaw (CVSS 5.3) affecting email security. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SonicWall Email Security contains a vulnerability that could permit a remote unauthenticated attacker access to an error page that includes sensitive information about users email addresses.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-209
Published	2023-02-14
Last modified	2026-06-17

Publisher (CNA): SonicWALL, Inc. · Vendor: sonicwall

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-14 03:15 UTCPublished CVE record published
2026-06-17 05:26 UTCUpdated Record last modified

sonicwall email security UPGRADE

Affected: <= 10.0.19.7431

Fixed in: newer than 10.0.19.7431

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy email-security || rpm -q email-security || email-security --version

2. UPGRADE to newer than 10.0.19.7431 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade email-security

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade email-security

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-0655?

email security: upgrade to newer than 10.0.19.7431. Exact commands for each OS are on this page.

Is CVE-2023-0655 being exploited?

CVE-2023-0655 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-0655 affect?

CVE-2023-0655 affects email security. Severity is medium (CVSS 5.3). SonicWall Email Security contains a vulnerability that could permit a remote unauthenticated attacker access to an error page that includes sensitive information about users email addresses.

How urgent is CVE-2023-0655?

Priority 37/100. Remotely exploitable, no login, no user action

Software pages

SonicWall vulnerabilities

Related CVEs

CVE-2021-20023 MEDIUM 4.9 EXPLOITED UPGRADE UPGRADE SonicWall Email Security Path Traversal Vulnerability
CVE-2021-20022 HIGH 7.2 EXPLOITED UPGRADE UPGRADE SonicWall Email Security Unrestricted Upload of File Vulnerability
CVE-2021-45105 MEDIUM 5.9 UPGRADE MITIGATE Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolle
CVE-2021-20021 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE SonicWall Email Security Improper Privilege Management Vulnerability
CVE-2024-2166 HIGH 8.8 UPGRADE Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Forcepoi

References

← Back to latest CVEs