How severe is CVE-2023-40053?

CVE-2023-40053 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-40053 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40053?

CVE-2023-40053 primarily affects Solarwinds Serv-u. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-40053?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-40053 published?

CVE-2023-40053 was published on 2023-12-06 and last updated on 2026-06-17.

CVE-2023-40053

CVE-2023-40053 is a medium-severity vulnerability in Solarwinds Serv-u with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Solarwinds Serv-u
Published: 2023-12-06
Last modified: 2026-06-17

Description

A vulnerability has been identified within Serv-U 15.4 that allows an authenticated actor to insert content on the file share function feature of Serv-U, which could be used maliciously.

Frequently asked questions

What is CVE-2023-40053?: A vulnerability has been identified within Serv-U 15.4 that allows an authenticated actor to insert content on the file share function feature of Serv-U, which could be used maliciously.
How severe is CVE-2023-40053?: CVE-2023-40053 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-40053 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40053?: CVE-2023-40053 primarily affects Solarwinds Serv-u. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-40053?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-40053 published?: CVE-2023-40053 was published on 2023-12-06 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:solarwinds:serv-u:15.4.0:-:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u:15.4.0:hotfix1:*:*:*:*:*:*
cpe:2.3:a:solarwinds:serv-u:15.4.0:hotfix2:*:*:*:*:*:*

More vulnerabilities in Solarwinds Serv-u

CVE-2020-35481 — Critical (CVSS 9.8): SolarWinds Serv-U before 15.2.2 allows Unauthenticated Macro Injection.
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