CVE-2021-27627Network attack vector

Service crash via unchecked strchr results

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. ChartInterpreter::DoIt() fails to validate several strchr() return values before calculating the next parameter offset from crafted interpreter input. No authentication is required, but exploitation requires retrieval of an existing system-state value and an IGS network request; the result is a service crash without data access 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. ChartInterpreter::DoIt() fails to validate several strchr() return values before calculating the next parameter offset from crafted interpreter input. No authentication is required, but exploitation requires retrieval of an existing system-state value and an IGS network request; the result is a service crash without data access or modification.

The record

CVE
CVE-2021-27627
Published
Jun 9, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP Internet Graphics Service
Classifications
CWE-787, T1499.004
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

5.9SAP SECVSS:3.0/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
5.9NIST NVDCVSS:3.1/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1499.004Application or System Exploitation

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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