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CVE-2021-27635

21
FAUCET Score

CVE-2021-27635 is a medium-severity vulnerability affecting SAP NetWeaver AS for JAVA versions 7.20 through 7.50. An authenticated administrator can exploit missing XML validation by submitting a specially crafted XML file over the network. This allows for full compromise of confidentiality by reading arbitrary files or full compromise of availability by crashing the system, but does not impact data integrity. While the CVSS score is 6.5 (MEDIUM), there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.20CPE matchmatch criteria
cpe:2.3:a:sap:netweaver_application_server_for_java:7.20:*:*:*:*:*:*:*
7.30CPE matchmatch criteria
cpe:2.3:a:sap:netweaver_application_server_for_java:7.30:*:*:*:*:*:*:*
7.31CPE matchmatch criteria
cpe:2.3:a:sap:netweaver_application_server_for_java:7.31:*:*:*:*:*:*:*
7.40CPE matchmatch criteria
cpe:2.3:a:sap:netweaver_application_server_for_java:7.40:*:*:*:*:*:*:*
7.50CPE matchmatch criteria
cpe:2.3:a:sap:netweaver_application_server_for_java:7.50:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.0CRITICAL

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.59%
Probability of exploitation in next 30 days
EPSS Percentile
73.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0159 is in the 80th percentile among its peer group of 3,563 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/164592/SAP-JAVA-NetWeaver-System-Connections-XML-Injection.html
PatchThird Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2021/Oct/28
Mailing ListPatchThird Party Advisory
launchpad.support.sap.com
Permissions RequiredVendor Advisory
wiki.scn.sap.com / wiki/pages/viewpage.action
Vendor Advisory