North Grid · Proself · North Grid Proself Improper Restriction of XML External Entity (XXE) Reference Vulnerability
Verdict
Patch soon · actively exploited, reachable from the internet without credentials, and in the top 25% of CVEs by near-term exploitation probability
Added to CISA KEV 2024-12-03 · exploited in the wild for 663 days
CVSS 7.5 HIGH. The score is a summary; these three components are the part that decides whether something scanning the internet can use it.
| Attack vector | networkreachable over the network, with no local access needed |
|---|---|
| Privileges required | noneneeds no credentials at all |
| User interaction | nonecan be triggered with nobody interacting with the page or request |
| Base vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| Weakness | CWE-611 |
This describes the vulnerability. It says nothing about whether your systems run it.
EPSS puts the probability of exploitation in the next 30 days at 0.0354, which places it in the top 25% of all tracked CVEs. The percentile is the more useful half: 0.18 in absolute terms sounds low until you know most of the internet-facing software in the world scores under that.
| EPSS probability | 0.0354 |
|---|---|
| Percentile | 0.889 — top 25% |
| Added to KEV | 2024-12-03 |
|---|---|
| Days exploited | 663 |
| Federal remediation due | not set |
| Ransomware use | no known ransomware campaign use |
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08 and earlier allow a remote unauthenticated attacker to conduct XML External Entity (XXE) attacks. By processing a specially crafted request containing malformed XML data, arbitrary files on the server containing account information may be read by the attacker.