9.8

CVE-2023-26258: arcserve udp Incorrect Authorization

CVSS: 9.8v3.1CriticalModified
Published 03-07-2023Last modified 25-11-2024
Open JSON

Vulnerability summary

CVE-2023-26258 is a critical (CVSS 9.8) Incorrect Authorization vulnerability in arcserve udp. EPSS estimates a 39.77% chance of exploitation in the next 30 days, higher than 98.6% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
39.77%
0%100%
High · +2.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 03-07-2023
    PublishedVulnerability first disclosed.
  2. 25-11-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

39.77%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

+2.06 pp

From 37.71% on 20-09-2026

20-09-202620-10-2026
EPSS score
39.77%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (mdsec.co.uk)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Arcserve1 product
  • udp≤ 9.0.6034

1 vendor · 1 product

References

3 links