CVE-2018-6832
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 · uneditedStack-based buffer overflow in the getSWFlag function in Foscam Cameras C1 Lite V3, and C1 V3 with firmware 2.82.2.33 and earlier, FI9800P V3, FI9803P V4, FI9851P V3, and FI9853EP V2 2.84.2.33 and earlier, FI9816P V3, FI9821EP V2, FI9821P V3, FI9826P V3, and FI9831P V3 2.81.2.33 and earlier, C1, C1 V2, C1 Lite, and C1 Lite V2 2.52.2.47 and earlier, FI9800P, FI9800P V2, FI9803P V2, FI9803P V3, and FI9851P V2 2.54.2.47 and earlier, FI9815P, FI9815P V2, FI9816P, and FI9816P V2, 2.51.2.47 and earlier, R2 and R4 2.71.1.59 and earlier, C2 and FI9961EP 2.72.1.59 and earlier, FI9900EP, FI9900P, and FI9901EP 2.74.1.59 and earlier, FI9928P 2.74.1.58 and earlier, FI9803EP and FI9853EP 2.22.2.31 and earlier, FI9803P and FI9851P 2.24.2.31 and earlier, FI9821P V2, FI9826P V2, FI9831P V2, and FI9821EP 2.21.2.31 and earlier, FI9821W V2, FI9831W, FI9826W, FI9821P, FI9831P, and FI9826P 2.11.1.120 and earlier, FI9818W V2 2.13.2.120 and earlier, FI9805W, FI9804W, FI9804P, FI9805E, and FI9805P 2.14.1.120 and earlier, FI9828P, and FI9828W 2.13.1.120 and earlier, and FI9828P V2 2.11.1.133 and earlier allows remote attackers to cause a denial of service (crash and reboot), via the callbackJson parameter.
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 analysisThe program writes past the bounds of a buffer, overwriting adjacent memory an attacker can turn to their advantage. Crafted input can overwrite control data and redirect execution. Remediation is validating every index and length before a write, plus modern memory-safety mitigations.
General guidance for the out-of-bounds write class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →
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<= 2.82.2.33<= 2.52.2.47<= 2.82.2.33<= 2.52.2.47<= 2.81.2.33<= 2.54.2.47<= 2.81.2.33<= 2.21.2.31<= 2.81.2.33<= 2.21.2.31<= 2.11.1.120<= 2.81.2.33<= 2.21.2.31<= 2.11.1.120<= 2.81.2.33<= 2.21.2.31<= 2.11.1.120<= 2.54.2.47<= 2.24.2.31CVSS 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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 dataScan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-6832 — 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-2018-6832 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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- 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