CVE-2023-25927
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIBM Security Verify Access 10.0.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4, and 10.0.5 could allow an attacker to crash the webseald process using specially crafted HTTP requests resulting in loss of access to the system. IBM X-Force ID: 247635.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA denial of service vulnerability in IBM Security Verify Access versions 10.0.0-10.0.5 allows remote attackers to crash the webseald (web seal daemon) process by sending specially crafted HTTP requests. The webseald component acts as a reverse proxy and authentication gateway; its crash results in complete loss of access to the system and protected resources.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 10.0.0= 10.0.1= 10.0.2= 10.0.3= 10.0.4= 10.0.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify if IBM Security Verify Access is installedCheck for the presence of IBM Security Verify Access installation directories or running processes. Look for the 'webseald' process using commands like 'ps -ef | grep webseald' or check common installation paths such as /opt/IBM/verify/access or C:\Program Files\IBM\Verify\AccessAffected if The webseald process is found running or the product installation directory exists on the system
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Determine the installed version of IBM Security Verify AccessCheck the version of the installed product. Common methods include: reviewing installation logs, checking the product's about page, using the 'ivmgr -version' or 'pdadmin -version' command if available, or inspecting version files in the installation directory under /opt/IBM/verify/access/ or the equivalent Windows pathAffected if The installed version is 10.0.0, 10.0.1, 10.0.2, 10.0.3, 10.0.4, or 10.0.5 (any version from 10.0.0 through 10.0.5 inclusive)
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Verify the webseald reverse proxy component is enabledConfirm that the webseald daemon is actively running and configured as the reverse proxy. Check the webseald configuration files (typically webseald.conf or similar) in the configuration directory, and verify the process is listening on configured HTTP/HTTPS ports (commonly port 443 or 80)Affected if The webseald component is running and accepting HTTP connections, exposing the vulnerability to network attackers
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Check for evidence of a patch or version upgradeInspect the currently installed version to confirm whether it is 10.0.6 or later, or check if the specific CVE-2023-25927 fix has been applied. Query the system's package manager, review IBM fix pack installation records, or consult the IBM Security Verify Access release notes for the installed versionAffected if The installed version remains at 10.0.0-10.0.5 with no evidence of the CVE-2023-25927 patch or upgrade to version 10.0.6 or later
You are affected if IBM Security Verify Access is installed with webseald running and the version is 10.0.0 through 10.0.5 (the vulnerability is present in these versions and the webseald component must be exposed to receive the specially crafted HTTP requests that cause the crash).
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedApply the IBM security patch for CVE-2023-25927 or upgrade to a patched version of IBM Security Verify Access (10.0.6 or later). Implement network-level rate limiting and DDoS protection as a compensating control until the patch can be applied.
IBM Security Verify Access 10.0.6 or later
- Check current IBM Security Verify Access version by running 'docker ps' or checking the appliance management console
- Backup all current configuration and user data
- Review IBM Security Verify Access 10.0.6+ release notes for migration guidelines
- Plan maintenance window as the webseald process restart may cause brief service interruption
- Execute upgrade to version 10.0.6 or later following IBM's official upgrade documentation
- After upgrade, verify the webseald process is running: docker exec <container_id> pdweb ps aux | grep webseald
- Test that the system handles normal HTTP requests without crashes
- Monitor system logs for any residual issues: docker logs <container_id>
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-25927 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-25927 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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