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Full vulnerability report · 2022
CVE-2022-22536High confidence

SAP Multiple Products HTTP Request Smuggling Vulnerability

SAP · Multiple Products

10.0CriticalCVSS 3.1
Recommended action
Protect now

CISA confirms exploitation in the wild and lists 2022-09-08 as the remediation due date.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • CISA confirms exploitation in the wild.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 97.95% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs SAP Multiple Products and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2022-27682

CISA KEV mirrored by ENISA

SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary data. This way, the attacker can execute functions impersonating the victim or poison intermediary Web caches. A successful attack could result in complete compromise of Confidentiality, Integrity and Availability of the system.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 18 Aug 2022. Evidence sources: cisa_kev.
ENISA score
9.8 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionProtect now

CISA confirms exploitation in the wild and lists 2022-09-08 as the remediation due date.

Fix not verified
01

What, why and how

SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server and SAP Web Dispatcher allow HTTP request smuggling. An unauthenticated attacker can prepend a victim's request with arbitrary data, allowing for function execution impersonating the victim or poisoning intermediary Web caches.

What

SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server and SAP Web Dispatcher allow HTTP request smuggling. An unauthenticated attacker can prepend a victim's request with arbitrary data, allowing for function execution impersonating the victim or poisoning intermediary Web caches.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server and SAP Web Dispatcher allow HTTP request smuggling. An unauthenticated attacker can prepend a victim's request with arbitrary data, allowing for function execution impersonating the victim or poisoning intermediary Web caches.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2022-08-18.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-444 ↗

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'). The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-444CISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2022-27682Known-exploited evidence recorded

SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server 7.53 and SAP Web Dispatcher are vulnerable for request smuggling and request concatenation. An unauthenticated attacker can prepend a victim's request with arbitrary data. This way, the attacker can execute functions impersonating the victim or poison intermediary Web caches. A successful attack could result in complete compromise of Confidentiality, Integrity and Availability of the system.

Official EUVD record ↗
Cyber Security Agency of Singapore · English · CSA-SB-20220216Security Bulletin 16 Feb 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 16 Feb 2022, published on 16 February 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-345Multiples vulnérabilités dans les produits SAP

ecord?id=CVE-2020-26291 Référence CVE CVE-2021-21480 https://www.cve.org/CVERecord?id=CVE-2021-21480 Référence CVE CVE-2021-27516 https://www.cve.org/CVERecord?id=CVE-2021-27516 Référence CVE CVE-2021-3647 https://www.cve.org/CVERecord?id=CVE-2021-3647 Référence CVE CVE-2021-38162 https://www.cve.org/CVERecord?id=CVE-2021-38162 Référence CVE CVE-2021-44832 https://www.cve.org/CVERecord?id=CVE-2021-44832 Référence CVE CVE-2022-0613 https://www.cve.org/CVERecord?id=CVE-2022-0613 Référence CVE CVE-2022-22532 https://www.cve.org/CVERecord?id=CVE-2022-22532 Référence CVE CVE-2022-22533 https://www.cve.org/CVERecord?id=CVE-2022-22533 Référence CVE CVE-2022-22536 https://www.cve.org/CVERecord?id=CVE-2022-22536 Référence CVE CVE-2022-22541 https://www.cve.org/CVERecord?id=CVE-2022-22541 Référence CVE CVE-2022-22542 https://www.cve.org/CVERecord?id=CVE-2022-22542 Référence CVE CVE-2022-22543 https://www.cve.org/CVERecord?id=CVE-2022-22543 Référence CVE CVE-2022-22545 https://www.cve.org/CVERecord?id=CVE-2022-22545 Référence CVE CVE-2022-22965 https://www.cve.org/CVERecord?id=CVE-2022-22965 Référence CVE CVE-2022-23181 https://www.cve.org/CVERecord?id=CVE-2022-23181 Référence CVE CVE-2022-26101 https://www.cve.org/CVERecord?id=CVE-2022-26101 Référence CVE CVE-2022-26105 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-125Multiples vulnérabilités dans les produits SAP

De multiples vulnérabilités ont été découvertes dans les produits SAP. Elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à l'intégrité des données et une atteinte à la confidentialité des données.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-004818複数の SAP 製品における HTTP リクエストスマグリングに関する脆弱性

複数の SAP 製品には、HTTP リクエストスマグリングに関する脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5701현재 악용되고 있는 Exploit(Update. 2022-08-18)

SAP NetWeaver Application Server ABAP, SAP NetWeaver Application Server Java, ABAP Platform, SAP Content Server and SAP Web Dispatcher allow HTTP request smuggling. An unauthenticated attacker can prepend a victim's request with arbitrary data, allowing for function execution impersonating the victim or poisoning intermediary Web caches.

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5527SAP 제품 취약점 보안 업데이트 권고

SAP NetWeaver, Content Server, Web Dispatcher에서 발생하는 HTTP Request Smuggling 취약점 (CVE-2022-22536)

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5502SAP 제품 취약점 보안 업데이트 권고

SAP NetWeaver, Content Server, Web Dispatcher에서 발생하는 HTTP Request Smuggling 취약점 (CVE-2022-22536)

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
  • SAP NetWeaver and ABAP Platform: KERNEL 7.22, 8.04, 7.49, 7.53, 7.77, 7.81, 7.85, 7.86, 7.87, KRNL64UC 8.04, 7.22, 7.22EXT, KRNL64NUC 7.22
  • SAP Web Dispatcher: 7.49, 7.53, 7.77, 7.81, 7.85, 7.22EXT, 7.86, 7.87
  • SAP Content Server: 7.53
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 9 Feb 2022 · Last source change 21 Oct 2025, 23:15 UTC · CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2022-27682
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: knvd.krcert.or.kr/detail?id=62fd0270d082fd0d2a52dbb0.
    Before
    remediation: knvd.krcert.or.kr/detail?id=62fd0270d082fd0d2a52dbb0 · vendor advisory: sap.com/fa865ea4-167e-0010-bca6-c68f7e60039b.html
    After
    vendor advisory: sap.com/fa865ea4-167e-0010-bca6-c68f7e60039b.html
    sap.com ↗
  2. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    sap.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    KERNEL 7.22; 8.04; 7.49; 7.53; 7.77; 7.81; 7.85; 7.86 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    SAP NetWeaver and ABAP Platform: KERNEL 7.22, 8.04, 7.49, 7.53, 7.77, 7.81, 7.85, 7.86, 7.87, KRNL64UC 8.04, 7.22, 7.22EXT, KRNL64NUC 7.22; SAP Web Dispatcher: 7.49, 7.53, 7.77, 7.81, 7.85, 7.22EXT, 7.86, 7.87; SAP Content Server: 7.53 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  4. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    KISA KrCERT/CC ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
ENISA EUVD · EUVD-2022-27682↗CISA KEV record↗Vendor advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2022-22536 · cve.blacktree.nl