SolarWinds vulnerabilities in CISA KEV
SolarWinds has 11 vulnerabilities in CISA's catalogue of flaws known to be exploited, the 27th highest of any vendor. 4 were added in the last 12 months; 2 are linked to known ransomware use (18.2% of its entries, against 20.4% across the catalogue). CISA's median fix window for these entries is 14 days (range 3 to 181), against 21 days (range 1 to 184) across the whole catalogue. The most exploited product is Web Help Desk, with 5 entries. Other frequently affected products: Serv-U (4); Orion (1).
Catalog v2026.11.04, released 5 Nov 2026. Source CISA ↗. All KEV entries.
$ ./kev --vendor solarwinds --summary
Counts are computed from the catalog release on ; the 12 month window ends there.
┌─ total entries
11
in CISA KEV
┌─ first added
2021-11-03
earliest entry
┌─ latest added
2026-06-05
most recent entry
┌─ last 12 months
4
entries added
┌─ ransomware use
2 of 11
18.2% linked to ransomware
┌─ distinct products
4
affected products
$ awk -F, {print $1} /var/log/kev/solarwinds.log | uniq -c
Entries by the year CISA added them.
| Year | Entries added | Of which ransomware |
|---|---|---|
| 2021 | 3 | 1 |
| 2022 | 1 | 0 |
| 2024 | 3 | 0 |
| 2026 | 4 | 1 |
$ sort /var/log/kev/solarwinds.log | uniq -c | sort -rn | head -5
The five products with the most entries in the catalogue.
- Web Help Desk 5 entries
- Serv-U 4 entries
- Orion 1 entry
- Virtualization Manager 1 entry
$ kev-due-dates --vendor solarwinds
Days between the date CISA added an entry and the due date it set, median and range. Due dates apply to US federal agencies; for everyone else they are a patch-first ranking signal.
┌─ SolarWinds
14 days (range 3 to 181)
median and range in days
┌─ whole catalogue
21 days (range 1 to 184)
median and range in days
$ grep -o 'CWE-[0-9]*' /var/log/kev/solarwinds.log | sort | uniq -c | sort -rn | head -3
Weakness types CISA records for these entries (11 of 11 have at least one CWE).
$ grep -ril 'SolarWinds' /var/log/news | head -5
Our reporting that names SolarWinds or one of its KEV CVE ids, newest first.
┌─ /var/log/news
Patch Week pages with these entries
No Patch Week page covers this vendor yet.
$ wc -l ./solarwinds.kev · 11 rows
Descriptions: CISA Known Exploited Vulnerabilities catalogue
- CVE-2026-28318
Serv-U
SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability
due 2026-06-19 · CWE-400
$ cat CVE-2026-28318.txt
Description. SolarWinds Serv-U contains an uncontrolled resource consumption vulnerability that allows specially crafted POST requests using the Content-Encoding: deflate header to crash the Serv-U service without authentication.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CVE-2025-26399
Web Help Desk [RANSOMWARE]
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
due 2026-03-12 · CWE-502
$ cat CVE-2025-26399.txt
Description. SolarWinds Web Help Desk contain a deserialization of untrusted data vulnerability in AjaxProxy that could allow an attacker to run commands on the host machine.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CVE-2025-40536
Web Help Desk
SolarWinds Web Help Desk Security Control Bypass Vulnerability
due 2026-02-15 · CWE-693
$ cat CVE-2025-40536.txt
Description. SolarWinds Web Help Desk contains a security control bypass vulnerability that could allow an unauthenticated attacker to gain access to certain restricted functionality.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CVE-2025-40551
Web Help Desk
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
due 2026-02-06 · CWE-502
$ cat CVE-2025-40551.txt
Description. SolarWinds Web Help Desk contains a deserialization of untrusted data vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CVE-2024-28987
Web Help Desk
SolarWinds Web Help Desk Hardcoded Credential Vulnerability
due 2024-11-05 · CWE-798
$ cat CVE-2024-28987.txt
Description. SolarWinds Web Help Desk contains a hardcoded credential vulnerability that could allow a remote, unauthenticated user to access internal functionality and modify data.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CVE-2024-28986
Web Help Desk
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
due 2024-09-05 · CWE-502
$ cat CVE-2024-28986.txt
Description. SolarWinds Web Help Desk contains a deserialization of untrusted data vulnerability that could allow for remote code execution.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CVE-2024-28995
Serv-U
SolarWinds Serv-U Path Traversal Vulnerability
due 2024-08-07 · CWE-22
$ cat CVE-2024-28995.txt
Description. SolarWinds Serv-U contains a path traversal vulnerability that allows an attacker access to read sensitive files on the host machine.
Required action. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CVE-2021-35247
Serv-U
SolarWinds Serv-U Improper Input Validation Vulnerability
due 2022-02-04 · CWE-20
$ cat CVE-2021-35247.txt
Description. SolarWinds Serv-U versions 15.2.5 and earlier contain an improper input validation vulnerability that allows attackers to build and send queries without sanitization.
Required action. Apply updates per vendor instructions.
- CVE-2016-3643
Virtualization Manager
SolarWinds Virtualization Manager Privilege Escalation Vulnerability
due 2022-05-03 · CWE-264
$ cat CVE-2016-3643.txt
Description. SolarWinds Virtualization Manager allows for privilege escalation through leveraging a misconfiguration of sudo.
Required action. Apply updates per vendor instructions.
- CVE-2020-10148
Orion
SolarWinds Orion Authentication Bypass Vulnerability
due 2022-05-03 · CWE-288
$ cat CVE-2020-10148.txt
Description. SolarWinds Orion API contains an authentication bypass vulnerability that could allow a remote attacker to execute API commands.
Required action. Apply updates per vendor instructions.
- CVE-2021-35211
Serv-U [RANSOMWARE]
SolarWinds Serv-U Remote Code Execution Vulnerability
due 2021-11-17 · CWE-787
$ cat CVE-2021-35211.txt
Description. SolarWinds Serv-U contains an unspecified memory escape vulnerability which can allow for remote code execution.
Required action. Apply updates per vendor instructions.