CVE-2023-26258
9.8
CRITICAL · CVSS 3.1 · EPSS 39.8% (pctl 99)
Patch early
EPSS 39.8% — above the 10% action threshold.
Description
Arcserve UDP through 9.0.6034 allows authentication bypass. The method getVersionInfo at WebServiceImpl/services/FlashServiceImpl leaks the AuthUUID token. This token can be used at /WebServiceImpl/services/VirtualStandbyServiceImpl to obtain a valid session. This session can be used to execute any task as administrator.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 39.77% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-863 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2023-07-03 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| arcserve | udp |
References
- https://support.arcserve.com/s/article/KB000015720?language=en_US
- https://www.arcserve.com/products/arcserve-udp
- https://www.mdsec.co.uk/2023/06/cve-2023-26258-remote-code-execution-in-arcserve-udp-backup/
- https://support.arcserve.com/s/article/KB000015720?language=en_US
- https://www.arcserve.com/products/arcserve-udp
- https://www.mdsec.co.uk/2023/06/cve-2023-26258-remote-code-execution-in-arcserve-udp-backup/
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