CVE-2021-27626Network attack vector

Service crash via unchecked CLWD content size

Published Jun 9, 2021 · Updated Aug 3, 2024

Memory corruption in SAP Internet Graphics Service 7.20, 7.20EXT, 7.20_EX2, 7.53, and 7.81 allows remote attackers to crash the service. CMiniXMLParser::Parse trusts the content size from the packet's CLWD table entry and uses it as the counter when reading content, causing out-of-bounds memory access. Exploitation requires an existing system-state value but no authentication; the documented consequence is service unavailability without data disclosure or modification.

CVSS severity5.9
Medium
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in SAP Internet Graphics Service 7.20, 7.20EXT, 7.20_EX2, 7.53, and 7.81 allows remote attackers to crash the service. CMiniXMLParser::Parse trusts the content size from the packet's CLWD table entry and uses it as the counter when reading content, causing out-of-bounds memory access. Exploitation requires an existing system-state value but no authentication; the documented consequence is service unavailability without data disclosure or modification.

The record

CVE
CVE-2021-27626
Published
Jun 9, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP Internet Graphics Service
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 7.20
  2. Affected versionversion=< 7.20_EX2
  3. Affected versionversion=< 7.20EXT
  4. Affected versionversion=< 7.53
  5. Affected versionversion=< 7.81

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP Internet Graphics Serviceversion=< 7.20; version=< 7.20_EX2; version=< 7.20EXT; version=< 7.53; version=< 7.81

Published CVSS scores

5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:N/A:P
5.9SAP SECVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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