Auth bypass in Arcserve Udp
CVE-2023-26258
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.398 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.377 · newest: 0.398 · change: +0.021
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.arcserve.com/products/arcserve-udp (Product)
- www.mdsec.co.uk/2023/06/cve-2023-26258-remote-code-execution-in-arcserve-udp-ba… (Technical Description, Exploit, Third Party Advisory)
- support.arcserve.com/s/article/KB000015720
Frequently asked questions
- What is CVE-2023-26258?
- CVE-2023-26258 is a critical-severity vulnerability in Arcserve Udp, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2023-07-03.
- How severe is CVE-2023-26258?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-26258 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.