How severe is CVE-2023-41265?

CVE-2023-41265 has a CVSS score of 9.6/10, rated CRITICAL. Immediate patching is strongly recommended.

Which products are affected by CVE-2023-41265?

Affected package information for CVE-2023-41265 is not yet fully mapped. Check the official advisory links for details.

How do I patch CVE-2023-41265?

No patch has shipped for CVE-2023-41265 yet — track the qlik qlik sense advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2023-41265 across my infrastructure?

Inventory every qlik qlik sense deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

How do I mitigate CVE-2023-41265 if there is no patch (or I can't update yet)?

Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

How does O3 Security protect against CVE-2023-41265?

O3 detects and blocks CVE-2023-41265 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Is CVE-2023-41265 actively exploited in the wild?

Yes. There are 4 known exploit references for CVE-2023-41265, including 3 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2023-41265?

CVE-2023-41265 has an EPSS (Exploit Prediction Scoring System) score of 85.0%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2023-41265 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2023-41265 (Qlik Sense HTTP Tunneling Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2023-12-07. CISA required all US federal civilian agencies to remediate this vulnerability by 2023-12-28. The required action was: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2023-41265?

CVE-2023-41265 is classified as CWE-444 (CWE-444). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2023-41265?

CVE-2023-41265 affects qlik qlik sense (4 versions, e.g. august_2022, february_2023, may_2023…). Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2023-41265?

A Nuclei detection template exists for CVE-2023-41265, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2023-41265 published, and has it been updated?

CVE-2023-41265 was published on August 29, 2023 and was last updated on June 17, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2023-12-07 — agencies required to remediate by 2023-12-28 · Ransomware

CVE-2023-41265

CRITICAL

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch…

Published

Aug 29, 2023

Updated

Jun 17, 2026

Affected

0 pkgs

Patched

None yet

Exploits

4 known

EPSS Exploitation Probability

via FIRST.org ↗

85.0%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise for Windows for versions May 2023 Patch 3 and earlier, February 2023 Patch 7 and earlier, November 2022 Patch 10 and earlier, and August 2022 Patch 12 and earlier allows a remote attacker to elevate their privilege by tunneling HTTP requests in the raw HTTP request. This allows them to send requests that get executed by the backend server hosting the repository application. This is fixed in August 2023 IR, May 2023 Patch 4, February 2023 Patch 8, November 2022 Patch 11, and August 2022 Patch 13.

Affected Products

1 product · 36 configurations

Application

qlik senseqlik

4 versions

august_2022february_2023may_2023november_2022

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise f…

arcticwolf.comAPINov 2023

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise f…

cisa.govCISADec 2023

An HTTP Request Tunneling vulnerability found in Qlik Sense Enterprise f…

github.comGithubAug 2023

Detection & mitigation playbook

Vendor / appliance

Detect
Inventory every qlik qlik sense deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Remediation status
No patch has shipped for CVE-2023-41265 yet — track the qlik qlik sense advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2023-41265 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2023-41265. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

O3 Security · Runtime Protection

Is CVE-2023-41265 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2023-41265 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.

Protect my workloads How runtime protection works

CVE-2023-41265

EPSS Exploitation Probability

Description

Affected Products

Detection & mitigation playbook

Detect

Remediation status

Mitigate without a patch

How O3 protects you

Frequently Asked Questions

Is CVE-2023-41265 being exploited in your environment?