CVE-2015-2505
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 · uneditedOutlook Web Access (OWA) in Microsoft Exchange Server 2013 Cumulative Update 8 and 9 and SP1 allows remote attackers to obtain sensitive stacktrace information via a crafted request, aka "Exchange Information Disclosure Vulnerability."
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 confidenceThis is an information disclosure vulnerability in Outlook Web Access (OWA) for Microsoft Exchange Server 2013 (Cumulative Updates 8, 9, and SP1). The vulnerability allows remote attackers to obtain sensitive stack trace information via a crafted HTTP request, which can reveal internal system details, file paths, and application structure that may aid in further exploitation.
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= 2013CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/A:N
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 installed Exchange Server versionCheck the Microsoft Exchange Server 2013 build number via Exchange Management Shell using Get-ExchangeServer | Format-List Name,Edition,AdminDisplayVersion or review the installed updates in Programs and Features to determine the Cumulative Update level (CU8, CU9, or SP1)Affected if The server is running Exchange Server 2013 Cumulative Update 8, Cumulative Update 9, or Service Pack 1 without the MS15-103 security update applied
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Confirm OWA is enabledVerify that Outlook Web Access is enabled on the Exchange server using Get-OwaVirtualDirectory in Exchange Management Shell to check the OWA configurationAffected if OWA virtual directories are configured and accessible, as the vulnerability is exploited through OWA HTTP requests
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Verify security update statusCheck for the presence of the MS15-103 security update in Windows Update history or in the installed updates list on the Exchange ServerAffected if The MS15-103 security update is NOT installed and the Exchange Server version is one of the affected Cumulative Updates (CU8, CU9, or SP1)
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Assess network exposure of OWAReview firewall rules, load balancer configurations, or reverse proxy settings that control access to OWA endpoints (/owa, /owa/auth) from external networksAffected if OWA is directly accessible from untrusted networks (such as the public internet) without VPN or authentication gateway protection
A user is affected if they are running Microsoft Exchange Server 2013 Cumulative Update 8, 9, or SP1 with OWA enabled and the MS15-103 security update has not been applied, particularly if OWA is exposed to untrusted networks.
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.
From vendor dataApply the relevant Microsoft security update (MS15-103) to Exchange Server 2013. For systems that cannot be immediately patched, consider restricting OWA access to trusted networks via firewall or VPN, and implement web application firewall rules to detect and block requests designed to trigger stack trace errors.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2015-2505 — 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-2015-2505 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data