Multiple heap-based buffer overflows in Huawei Campus Series Switches S3700HI, S5700, S6700, S3300HI, S5300, S6300, S9300, S7700, and LSW S9
Multiple heap-based buffer overflows in Huawei Campus Series Switches S3700HI, S5700, S6700, S3300HI, S5300, S6300, S9300, S7700, and LSW S9700 with software V200R001 before V200R001SPH013; S5700, S6700, S5300, and S6300 with software V200R002 before V200R002SPH005; S7700, S9300, S9300E, S5300, S5700, S6300, S6700, S2350, S2750, and LSW S9700 with software V200R003 before V200R003SPH005; and S7700, S9300, S9300E, and LSW S9700 with software V200R005 before V200R005C00SPC300 allow remote attackers to cause a denial of service (device restart) via a crafted length field in a packet.
- Published
- Jun 17, 2014
- Updated
- Jun 16, 2026
- EPSS
- 1.5% · 73th percentile
- CWE
- CWE-119
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.5%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| huawei | campus series switch software | cpe:2.3:a:huawei:campus_series_switch_software |
| huawei | campus lsw s9700 | cpe:2.3:h:huawei:campus_lsw_s9700 |
| huawei | campus s3300hi | cpe:2.3:h:huawei:campus_s3300hi |
| huawei | campus s3700hi | cpe:2.3:h:huawei:campus_s3700hi |
| huawei | campus s5300 | cpe:2.3:h:huawei:campus_s5300 |
| huawei | campus s5700 | cpe:2.3:h:huawei:campus_s5700 |
| huawei | campus s6300 | cpe:2.3:h:huawei:campus_s6300 |
| huawei | campus s6700 | cpe:2.3:h:huawei:campus_s6700 |
| huawei | campus s7700 | cpe:2.3:h:huawei:campus_s7700 |
| huawei | campus s9300 | cpe:2.3:h:huawei:campus_s9300 |
| huawei | campus s9300e | cpe:2.3:h:huawei:campus_s9300e |
| huawei | campus s2350 | cpe:2.3:h:huawei:campus_s2350 |
and 1 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- huawei campus lsw s9700all versions
- huawei campus s2350all versions
- huawei campus s2750all versions
- huawei campus s3300hiall versions
- huawei campus s3700hiall versions
- huawei campus s5300all versions
- huawei campus s5700all versions
- huawei campus s6300all versions
- huawei campus s6700all versions
- huawei campus s7700all versions
- huawei campus s9300all versions
- huawei campus s9300eall versions
- huawei campus series switch softwarev200r001
- huawei campus series switch softwarev200r002
- huawei campus series switch softwarev200r003
- huawei campus series switch softwarev200r005
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
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- C
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:C
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
- www.huawei.com/en/security/psirt/security-bulletins/security-advisories/hw-343218.htm
- www.securityfocus.com/bid/67907
Vendor advisories and official records. Exploit/PoC links are deliberately left out.