CVE-2023-5770
MEDIUMDescription
Proofpoint Enterprise Protection contains a vulnerability in the email delivery agent that allows an unauthenticated attacker to inject improperly encoded HTML into the email body of a message through the email subject. The vulnerability is caused by inappropriate encoding when rewriting the email before delivery.This issue affects Proofpoint Enterprise Protection: from 8.20.2 before patch 4809, from 8.20.0 before patch 4805, from 8.18.6 before patch 4804 and all other prior versions.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 27% of all known CVEs.
References
Related Vulnerabilities
Other CWE-838 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2019-6110 | Medium | 6.8 | 21% | - | Fix |
| CVE-2020-10996 | High | 8.1 | 1.5% | - | Fix |
| CVE-2019-18981 | Critical | 9.8 | 1.4% | - | Fix |
| CVE-2023-6512 | Medium | 6.5 | 1.3% | - | Fix |
| CVE-2020-7292 | Medium | 4.3 | 0.9% | - | Fix |
| CVE-2023-3735 | Medium | 4.3 | 0.6% | - | Fix |
Common questions
How do I fix CVE-2023-5770?
No published fix for CVE-2023-5770 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2023-5770 being actively exploited?
Not that we know of. CVE-2023-5770 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.34% is the estimated probability that it will be exploited in the next 30 days. That is higher than 27% of all scored CVEs.
How severe is CVE-2023-5770?
CVE-2023-5770 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.