CVE-2022-22536

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.

CVSS: 10.0Critical
Exploited in the wild: Yes, in CISA KEV since 18 Aug 2022CISA deadline for US federal agencies: 8 Sept 2022public exploit code
EPSS: 97.9%chance of exploitation in the next 30 daystop 0.1% of scored CVEsFIRST score of 11 Nov 2026
Fix: Patch availablesee the advisories in the references
Published: 9 Feb 2022analysed here 12 Nov 2026

Do first. Apply updates per vendor instructions. (CISA's required action for this KEV entry)

Summary

Triage

Exploitable: At runtime
Attack vector: network
Weakness: CWE-444 Common Weakness
Can a WAF block it?: No. See why

The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.

Affected products

Product	Affected versions	Vendor says fixed in
SAP SE SAP Content Server	7.53Vendor says fixed in: not stated	Not stated by the vendor
SAP SE SAP NetWeaver and ABAP Platform	KERNEL 7.228.047.497.537.777.817.857.867.87KRNL64UC 8.047.227.22EXTKRNL64NUC 7.22Vendor says fixed in: not stated	Not stated by the vendor
SAP SE SAP Web Dispatcher	7.497.537.777.817.857.22EXT7.867.87Vendor says fixed in: not stated	Not stated by the vendor

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

Products named in our analysis

sap:content_server
sap:netweaver_application_server_abap
sap:web_dispatcher

Fix and mitigation

WAF and other mitigations

Can a WAF block it? No. The vulnerability involves HTTP request smuggling and concatenation, where an attacker can prepend arbitrary data to a victim's HTTP request. Such attacks manipulate how HTTP requests are parsed and typically look like normal HTTP traffic, making it difficult for a WAF to distinguish malicious requests from legitimate ones.

Also consider: patch

Based on an AI reading of the CVE description, and no vendor rule found yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.

Remediation steps (AI-written)

Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.

Exploitation evidence

CISA KEV catalog: Listed since 18 Aug 2022.
CISA due date: 8 Sept 2022, the remediation deadline for US federal agencies
CISA required action: Apply updates per vendor instructions.
Public exploit code: Yes: 1 on Exploit-DB · 4 GitHub proofs of concept · 1 Nuclei template
CISA SSVC: exploitation active, automatable yes, technical impact totalAssessed by CISA 29 Jan 2025 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.

Exploit-DB

SAP NetWeaver - 7.53 - HTTP Request Smugglingremote, 2 Apr 2025

Nuclei

SAP Memory Pipes (MPI) Desynchronizationdetection template, critical

GitHub proofs of concept

Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.

Timeline

9 Feb 2022Published
15 Feb 2022First public exploit or proof of concept5 days later
18 Aug 2022Added to CISA KEV (exploited in the wild)184 days (about 6 months) later
8 Sept 2022CISA remediation due date (US federal agencies)21 days later
29 Jan 2025CISA SSVC assessment: exploitation active875 days (about 2 years) later
21 Oct 2025CVE record last updated265 days (about 9 months) later
12 Nov 2026Analysed by vulneraibility.com387 days (about 1 year) later

CVSS vector

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

Metric	Value	What it means
Attack vector	NetworkReachable over the internet or any routable network.	Reachable over the internet or any routable network.
Attack complexity	LowRepeatable attack, no special conditions.	Repeatable attack, no special conditions.
Privileges required	NoneThe attacker needs no prior access.	The attacker needs no prior access.
User interaction	NoneNo victim action needed.	No victim action needed.
Scope	ChangedImpact crosses a security boundary into other components.	Impact crosses a security boundary into other components.
Confidentiality	HighTotal data disclosure possible.	Total data disclosure possible.
Integrity	HighComplete modification possible.	Complete modification possible.
Availability	HighFull outage possible.	Full outage possible.

Common questions

Is CVE-2022-22536 being exploited?

Yes. CVE-2022-22536 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.

How severe is CVE-2022-22536?

CVE-2022-22536 is rated Critical with a CVSS score of 10.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2022-22536?

Yes. A fix has been recorded for CVE-2022-22536. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2022-22536 affect?

CVE-2022-22536 affects sap:content_server, sap:netweaver_application_server_abap, sap:web_dispatcher. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

References

NVD CVE.org CVE Details Source

3 references in the CVE record, grouped by the tags the record gives them.

Where the data on this page comes from

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
CISA KEV catalog: exploitation, date added, due date
CISA Vulnrichment (ADP): SSVC decision points
FIRST EPSS: exploit probability and percentile
Exploit-DB: published exploits
Nuclei templates: detection templates
PoC-in-GitHub: GitHub repositories that claim a proof of concept

Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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