CVE-2025-23006
CVE-2025-23006 is a security flaw in SonicWall SMA1000 Appliances, SonicWall’s firewall and remote-access equipment. Attackers can run their own code on SonicWall SMA1000 Appliances from anywhere, without logging in. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 24 Jan 2025, and says ransomware gangs have used it.[1]
SonicWall SMA1000 Appliances is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. SonicWall has published a fix or advice.
Description
CISA calls it a deserialization in SonicWall SMA1000 Appliances. In its words: “SonicWall SMA1000 Appliance Management Console (AMC) and Central Management Console (CMC) contain a deserialization of untrusted data vulnerability, which can enable a remote, unauthenticated attacker to execute arbitrary OS commands.”[1]
The CVE record adds: “Pre-authentication deserialization of untrusted data vulnerability has been identified in the SMA1000 Appliance Management Console (AMC) and Central Management Console (CMC), which in specific conditions could potentially enable a remote unauthenticated attacker to execute arbitrary OS commands.”[2]
The underlying weakness is deserialization of untrusted data (CWE-502), in MITRE’s list of common software weaknesses.
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; SonicWall’s advisory has them[3]. CISA names the product as SonicWall SMA1000 Appliances.
Most families won’t have SonicWall SMA1000 Appliances; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 24 Jan 2025, within a day of it being made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 14 Feb 2025 to fix it.[1] CISA says ransomware gangs have used it.
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 27%. That’s in the top 2% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
SonicWall has published a fix or advice.[3] CISA’s required action: “Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.”[1]
- Check whether you use it.SonicWall SMA1000 Appliances is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 14 Feb 2025 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks, noting that ransomware gangs have used it.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 27%.[4] |
See also
Other SonicWall SMA1000 Appliances flaws
- CVE-2026-83549: OS command injection ·
- CVE-2026-83548: server-side request forgery ·
- CVE-2026-15410: code injection ·
- CVE-2026-15409: server-side request forgery ·
Other SonicWall flaws
- CVE-2025-40602, SonicWall SMA1000 appliance: sMA1000 missing authorization ·
- CVE-2023-44221, SonicWall SMA100 Appliances: OS command injection ·
- CVE-2021-20035, SonicWall SMA100 Appliances: OS command injection ·
- CVE-2024-53704, SonicWall SonicOS: SSLVPN improper authentication ·
- CVE-2024-40766, SonicWall SonicOS: improper access control ·
Other deserialization of untrusted data flaws
- CVE-2021-23758, Ajax.NET Professional: deserialization of untrusted data ·
- CVE-2026-63077, JetBrains TeamCity: deserialization of untrusted data ·
- CVE-2026-50522, Microsoft SharePoint: deserialization of untrusted data ·
- CVE-2026-58644, Microsoft SharePoint: deserialization of untrusted data ·
- CVE-2026-45659, Microsoft SharePoint Server: deserialization of untrusted data ·
Every SonicWall flaw on CISA’s list · Everything added in January 2025
References
- ^ Cybersecurity and Infrastructure Security Agency. “SonicWall SMA1000 Appliances Deserialization Vulnerability”. Known Exploited Vulnerabilities Catalog, added 24 Jan 2025.
- ^ National Institute of Standards and Technology. “CVE-2025-23006 Detail”. National Vulnerability Database, published 23 Jan 2025.
- ^ SonicWall. Advisories and fixes: psirt.global.sonicwall.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.266, percentile 98.0, 31 Oct 2026.
- CVE Program. “CVE-2025-23006”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.