An update for tar is now available for HCE 3.0 Security Advisory hws_security@huawei.com Huawei Cloud HCE3-SA-2026-0040 Final 1.0 1.0 2026-03-02T12:29:06:00Z current version 2026-03-02T12:29:06:00Z 2026-03-02T12:29:06:00Z HCE SA Engine 1.0.0 An update for tar is now available for HCE 3.0 HCE Security has rated this update as having a security impact of Moderate.A Common Vunlnerability Scoring System(CVSS)base score, which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Security Fix(es): GNU Tar through 1.35 allows file overwrite via directory traversal in crafted TAR archives, with a certain two-step process. First, the victim must extract an archive that contains a ../ symlink to a critical directory. Second, the victim must extract an archive that contains a critical file, specified via a relative pathname that begins with the symlink name and ends with that critical file_x27;s name. Here, the extraction follows the symlink and overwrites the critical file. This bypasses the protection mechanism of "Member name contains _x27;.._x27;" that would occur for a single TAR archive that attempted to specify the critical file via a ../ approach. For example, the first archive can contain "x -> ../../../../../home/victim/.ssh" and the second archive can contain x/authorized_keys. This can affect server applications that automatically extract any number of user-supplied TAR archives, and were relying on the blocking of traversal. This can also affect software installation processes in which "tar xf" is run more than once (e.g., when installing a package can automatically install two dependencies that are set up as untrusted tarballs instead of official packages). NOTE: the official GNU Tar manual has an otherwise-empty directory for each "tar xf" in its Security Rules of Thumb; however, third-party advice leads users to run "tar xf" more than once into the same directory. (CVE-2025-45582) This document is provided on an "AS IS" basis and does not implyany kind of guarantee or warranty, either express or implied, including the warranties of merchantability or fitness for a particular purpose. In no eventshall Huawei or any of its directly or indirectly controlled subsidiaries or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. Your use of the document, by any means, is totally at your own risk. Huawei is entitled to amend or update this document from time to time. The information and data embodied in this document and any attachment are strictly confidential information of Huawei and are supplied on the understanding that they will be held confidentially and not disclosed to third parties without the prior written consent of Huawei. Use all reasonable efforts to protect the confidentiality of information. In particular, do not directly or indirectly disclose, allow access to, transmit or transfer information to a third party without our prior written consent. Thank you for your co-operation. Receipt of this security advisory shall be deemed as your consent of the terms and conditions above. Huawei Cloud EulerOS 3.0 tar This vulnerability can be exploited only when the following conditions are present: None Vulnerability details: For technical details, customers are advised to reference the website: https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-45582 CVE-2025-45582 HCE 3.0:tar-1.35-2.r2.hce3 For technical details, customers are advised to referencethe website: https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-45582 4.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:L