Which products and versions are affected by CVE-2020-27858?

Affected: D2D (Arcserve) versions 16.5, >= 16.5. The full list is in the CVE brief.

Is CVE-2020-27858 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2020-27858 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2020-27858?

No public exploit code is known.

Is there a fix for CVE-2020-27858?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2020-27858 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2020-27858

High

This vulnerability allows remote attackers to disclose sensitive information on affected installations of CA Arcserve D2D 16.5.

Published Jan 20, 2021 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2020-27858 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting D2D (Arcserve).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 74% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

7.5

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

EPSS (30-day exploit likelihood)

74%

Higher than 99.4% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2020-27858 brief as a PDF

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Description

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.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
D2DArcserve	16.5, >= 16.5	n/a

Timeline

Publicly disclosed
Jan 20, 2021
Last updated
Nov 21, 2024

Weakness Type

CWE-611 Improper Restriction of XML External Entity Reference

References

advisoryhttps://www.zerodayinitiative.com/advisories/ZDI-20-1397/

FAQ

Common Questions.

This vulnerability allows remote attackers to disclose sensitive information on affected installations of CA Arcserve D2D 16.5.
Affected: D2D (Arcserve) versions 16.5, >= 16.5. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2020-27858 Running On Your Attack Surface?

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