Evidence used
- No CISA KEV confirmation is currently recorded.
- EPSS is 4.82% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2015
CVE-2015-7940High confidence
Affected product: Exposure of Sensitive Information to an Unauthorized Actor
Unknown · Unknown
5.0MediumCVSS 2.0
Scheduled
Patch availableMedium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityMedium→Operational priority:Medium, unchanged from published severity.unchanged
Compensating controls
- Validate the affected product branch and deploy the verified fixed release.
- Restrict local access and enforce least privilege on affected hosts.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Unknown Unknown and falls inside the recorded affected range.
- Verify the installed build against the product-specific fixed version after deployment.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Distribution package intelligence
4 package statesRelease-specific package status
Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.
Repository candidate not checked
A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.
| Distribution release | Source package | Vendor state | Fixed version | Evidence |
|---|---|---|---|---|
| Debian trixietrixie · source | bouncycastle | Vendor fix publishedDebian records a fixed source-package version for this release. | 1.51-1 | Debian Security Tracker ↗Source updated 22 Oct 2026 |
| Debian bookwormbookworm · source | bouncycastle | Vendor fix publishedDebian records a fixed source-package version for this release. | 1.51-1 | Debian Security Tracker ↗Source updated 22 Oct 2026 |
| Debian forkyforky · source | bouncycastle | Vendor fix publishedDebian records a fixed source-package version for this release. | 1.51-1 | Debian Security Tracker ↗Source updated 22 Oct 2026 |
| Debian sidsid · source | bouncycastle | Vendor fix publishedDebian records a fixed source-package version for this release. | 1.51-1 | Debian Security Tracker ↗Source updated 22 Oct 2026 |
Open-source package ranges3 source-attributed ranges
These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.
| Ecosystem and package | Affected range | First fixed version | Evidence |
|---|---|---|---|
| mavenorg.bouncycastle:bcprov-jdk14 | < 1.51 | 1.51 | GitHub advisory ↗github reviewed aggregator · 12 Sep 2025 |
| mavenorg.bouncycastle:bcprov-jdk15 | < 1.51 | 1.51 | GitHub advisory ↗github reviewed aggregator · 12 Sep 2025 |
| mavenorg.bouncycastle:bcprov-jdk15on | < 1.51 | 1.51 | GitHub advisory ↗github reviewed aggregator · 12 Sep 2025 |
Direct vendor intelligence
1 currentAuthoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
CVE-2015-7940 · CSAF 2.0 · revision 13 · interimSUSE Product Security TeamCVE-2015-7940
The vendor recommends these product versions as the target state.
- bouncycastle-1.64-1.63 as component of SUSE Enterprise Storage 7.1
- bouncycastle-pg-1.64-1.63 as component of SUSE Enterprise Storage 7.1
- bouncycastle-1.64-1.63 as component of SUSE Enterprise Storage 7
- bouncycastle-pg-1.64-1.63 as component of SUSE Enterprise Storage 7
- bouncycastle-1.64-1.63 as component of SUSE Linux Enterprise Desktop 15 SP2
- bouncycastle-pg-1.64-1.63 as component of SUSE Linux Enterprise Desktop 15 SP2
- bouncycastle-1.64-1.63 as component of SUSE Linux Enterprise Desktop 15 SP3
- bouncycastle-pg-1.64-1.63 as component of SUSE Linux Enterprise Desktop 15 SP3
- bouncycastle-1.64-3.3.1 as component of SUSE Linux Enterprise Desktop 15 SP4
- bouncycastle-pg-1.64-3.3.1 as component of SUSE Linux Enterprise Desktop 15 SP4
- bouncycastle-1.72-150200.3.12.1 as component of SUSE Linux Enterprise Desktop 15 SP5
- bouncycastle-pg-1.72-150200.3.12.1 as component of SUSE Linux Enterprise Desktop 15 SP5
- Summary
- The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."
- Remediation
- To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Patch available01
What, why and how
The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."
What
The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."
Why
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
How
An attacker operating through the affected interface may attempt exploitation when the stated preconditions are met. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."
Why
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
How
An attacker operating through the affected interface may attempt exploitation when the stated preconditions are met. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- the affected interface → Exposure of Sensitive Information to an Unauthorized Actor → cause the confidentiality, integrity or availability impact described by the vendor
- Attack surface
- Unspecified
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- Not stated in the selected CVSS metric
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Not stated in the selected CVSS metric
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-200 ↗
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. AV:N/AC:L/Au:N/C:P/I:N/A:N- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Patch available
- Affected
- n/a
- Action
- To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
- Workaround
- No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04
Evidence and provenance
Published 9 Nov 2015 · Last source change 6 Aug 2024, 08:06 UTC · CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source FIRST · tracked since 2026-09-01
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2018-0502
Product sourceUnavailable
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceNIST NVD
NVD statusNVD modified after enrichment
Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.
Material change intelligence
View recent updates ↗What changed after publication
- ENISA EUVD mappingEUVD-2018-0502 was added to the official ENISA EUVD mapping for this CVE.ENISA EUVD ↗
- Before
- not recorded
- After
- {"euvdId":"EUVD-2018-0502"}
- Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: debian.org/dsa-3417; removed vendor advisory: lists.fedoraproject.org/174915.html; 4 further removals.CNA ↗
- Before
- vendor advisory: debian.org/dsa-3417 · vendor advisory: lists.fedoraproject.org/174915.html · vendor advisory: lists.opensuse.org/msg00012.html · 3 more references
- After
- no authoritative guidance recorded
- SeveritySeverity changed from Unknown to Medium.NIST NVD ↗
- Before
- Unknown
- After
- Medium
- CVSS scoreCVSS score changed from not recorded to 5.0 (CVSS 2.0 · NIST NVD · AV:N/AC:L/Au:N/C:P/I:N/A:N).NIST NVD ↗
- Before
- not recorded
- After
- 5.0 (CVSS 2.0 · NIST NVD · AV:N/AC:L/Au:N/C:P/I:N/A:N)
- Catalogue recordCVE added to the BlackTree catalogue.CNA ↗
- Remediation statusRemediation status changed from Awaiting fix to Mitigation available.Canadian Centre for Cyber Security ↗
- Before
- Awaiting fix
- After
- Mitigation available
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.