The PPP Access Concentrator (PPPAC) on SEIL SEIL/x86 routers 1.00 through 3.10, SEIL/X1 routers 1.00 through 4.50, SEIL/X2 routers 1.00 thro
The PPP Access Concentrator (PPPAC) on SEIL SEIL/x86 routers 1.00 through 3.10, SEIL/X1 routers 1.00 through 4.50, SEIL/X2 routers 1.00 through 4.50, SEIL/B1 routers 1.00 through 4.50, SEIL/Turbo routers 1.80 through 2.17, and SEIL/neu 2FE Plus routers 1.80 through 2.17 allows remote attackers to cause a denial of service (session termination or concentrator outage) via a crafted TCP packet.
- Published
- Jun 16, 2014
- Updated
- Jun 16, 2026
- EPSS
- 2.1% · 81th percentile
- CWE
- CWE-119
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Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.1%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| iij | seil\%2fturbo firmware | cpe:2.3:o:iij:seil\%2fturbo_firmware |
| iij | seil\/turbo | cpe:2.3:h:iij:seil\/turbo |
| iij | seil\%2fneu 2fe plus firmware | cpe:2.3:o:iij:seil\%2fneu_2fe_plus_firmware |
| iij | seil\/neu 2fe plus | cpe:2.3:h:iij:seil\/neu_2fe_plus |
| iij | seil\%2fx86 firmware | cpe:2.3:o:iij:seil\%2fx86_firmware |
| iij | seil\/x86 | cpe:2.3:h:iij:seil\/x86 |
| iij | seil\%2fx2 firmware | cpe:2.3:o:iij:seil\%2fx2_firmware |
| iij | seil\/x2 | cpe:2.3:h:iij:seil\/x2 |
| iij | seil\%2fx1 firmware | cpe:2.3:o:iij:seil\%2fx1_firmware |
| iij | seil\/x1 firmware | cpe:2.3:o:iij:seil\/x1_firmware |
| iij | seil\/x1 | cpe:2.3:h:iij:seil\/x1 |
| iij | seil\%2fb1 firmware | cpe:2.3:o:iij:seil\%2fb1_firmware |
and 1 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- iij seil/b1all versions
- iij seil/neu 2fe plusall versions
- iij seil/turboall versions
- iij seil/x1all versions
- iij seil/x2all versions
- iij seil/x86all versions
- iij seil%2fb1 firmware1.00
- iij seil%2fb1 firmware4.30
- iij seil%2fb1 firmware4.31
- iij seil%2fb1 firmware4.32
- iij seil%2fb1 firmware4.50
- iij seil%2fneu 2fe plus firmware1.80
- iij seil%2fneu 2fe plus firmware2.05
- iij seil%2fneu 2fe plus firmware2.15
- iij seil%2fneu 2fe plus firmware2.16
- iij seil%2fneu 2fe plus firmware2.17
- iij seil%2fturbo firmware1.80
- iij seil%2fturbo firmware2.05
- iij seil%2fturbo firmware2.15
- iij seil%2fturbo firmware2.16
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- jvn.jp/en/jp/JVN10724763/index.html
- jvndb.jvn.jp/jvndb/JVNDB-2014-000055
- www.seil.jp/support/security/a01443.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.