CVE-2020-27858 in the critical feed json
This vulnerability allows remote attackers to disclose sensitive information on affected installations of CA Arcserve D2D 16.5.
published 2021-01-20 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-20351
- cvss
- 7.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 73.8%
- EPSS 73.8% chance of exploitation in 30 days, percentile 99.4%
- public exploits
- 0
- none known
Summary
This vulnerability allows remote attackers to disclose sensitive information on affected installations of CA Arcserve D2D 16.5. Authentication is not required to exploit this vulnerability. The specific flaw exists within the getNews method. Due to the improper restriction of XML External Entity (XXE) references, a specially-crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-11103.
Exploit prediction
73.83% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Arcserve D2D
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
zerodayinitiative.com
/advisories/ZDI-20-1397/
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2020-27858
- NVD CVE-2020-27858
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.