CVE-2025-32463
CVE-2025-32463 is a security flaw in Sudo. Someone who already has a way in can use Sudo to run their own code. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 29 Sep 2025.[1]
Sudo 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. Fixed in version 1.9.17p1 of Sudo.
Description
CISA calls it an inclusion of functionality from untrusted control sphere in Sudo Sudo. In its words: “Sudo contains an inclusion of functionality from untrusted control sphere vulnerability. This vulnerability could allow local attacker to leverage sudo’s -R (--chroot) option to run arbitrary commands as root, even if they are not listed in the sudoers file.”[1]
The underlying weakness is CWE-829, in MITRE’s list of common software weaknesses.[2]
It scores 7.8 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by NVD using CVSS 3.1.[2]
Affected versions
NVD’s record lists one fixed version: everything before it is affected.[2]
| Product | Fixed in |
|---|---|
| Sudo | 1.9.17p1 |
Most families won’t have Sudo; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 29 Sep 2025, 91 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 20 Oct 2025 to fix it.[1]
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 55%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as not automatable: each attack takes some work.
CISA doesn’t say who was attacked, or how.
Fix
Sudo has published a fix or advice.[3] CISA’s 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.”[1]
- Check whether you use it.Sudo 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 (fixed in version 1.9.17p1 of Sudo), or not in use. CISA gave US government agencies until 20 Oct 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 7.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[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 55%.[4] |
See also
Other Sudo flaws
- CVE-2021-3156: heap-based buffer overflow ·
Similar flaws
- CVE-2026-0770, Langflow: inclusion of functionality from untrusted control sphere ·
Added the same day
- CVE-2025-59689, Libraesva Email Security Gateway: command injection ·
- CVE-2025-20352, Cisco IOS and IOS XE: software SNMP denial of service and remote code execution ·
- CVE-2025-10035, Fortra GoAnywhere MFT: deserialization of untrusted data ·
- CVE-2021-21311, Adminer: server-side request forgery ·
References
- ^ Cybersecurity and Infrastructure Security Agency. “Sudo Inclusion of Functionality from Untrusted Control Sphere Vulnerability”. Known Exploited Vulnerabilities Catalog, added 29 Sep 2025.
- ^ National Institute of Standards and Technology. “CVE-2025-32463 Detail”. National Vulnerability Database, published 30 Jun 2025.
- ^ Sudo. Advisories and fixes: sudo.ws, sudo.ws, sudo.ws, vicarius.io.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.555, percentile 99.0, 31 Oct 2026.
- CVE Program. “CVE-2025-32463”. 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.