Stack-based buffer overflow in the receive_tcppacket function in net_packet.c in tinc before 1.0.21 and 1.1 before 1.1pre7 allows remote aut
Stack-based buffer overflow in the receive_tcppacket function in net_packet.c in tinc before 1.0.21 and 1.1 before 1.1pre7 allows remote authenticated peers to cause a denial of service (crash) or possibly execute arbitrary code via a large TCP packet.
- Published
- Apr 26, 2013
- Updated
- Jun 16, 2026
- EPSS
- 60.7% · 99th percentile
- CWE
- CWE-119
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Report tools
Action score
44
Plan
Add it to your regular patch cycle.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 18 / 30 · 60.7%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; 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 helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| tinc-vpn | tinc | cpe:2.3:a:tinc-vpn:tinc |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- tinc-vpn tincup to 1.0.20 inclusive
- tinc-vpn tincup to 1.1 inclusive
- tinc-vpn tinc1.0.17
- tinc-vpn tinc1.0.18
- tinc-vpn tinc1.0.19
- tinc-vpn tinc1.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | tinc | before 1.0.19-3 | 1.0.19-3 |
| Debian:6.0 | tinc | before 1.0.13-1+squeeze1 | 1.0.13-1+squeeze1 |
Same product
tinc-vpn: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-16758Missing message authentication in the meta-protocol in Tinc VPN version 1.0.34 and earlier allows a man-in-the-middle attack to disable the 23Monitor
- CVE-2018-16737tinc before 1.0.30 has a broken authentication protocol, without even a partial mitigation.21Monitor
- CVE-2018-16738tinc 1.0.30 through 1.0.34 has a broken authentication protocol, although there is a partial mitigation.14Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:tinc | 1.0.19-3 · Debian:12 | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | remote | 2014-12-02 |
| Metasploit module | exploit/multi/vpn/tincd_bofTincd Post-Authentication Remote TCP Stack Buffer Overflowexploit | 2013-04-22 |
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.
- Metasploit-5 d
- Published
- First PoC+584 d
- TodayOct 9, 2026+4914 d
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.
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
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- 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:S/C:P/I:P/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
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- freecode.com/projects/tinc/releases/354122
- lists.fedoraproject.org/pipermail/package-announce/2013-May/105531.html
- lists.fedoraproject.org/pipermail/package-announce/2013-May/105559.html
- lists.fedoraproject.org/pipermail/package-announce/2013-May/106167.html
- osvdb.org/92653
- secunia.com/advisories/53087
- secunia.com/advisories/53108
- www.debian.org/security/2013/dsa-2663
- www.securityfocus.com/bid/59369
- www.tinc-vpn.org/news/
- www.tinc-vpn.org/pipermail/tinc/2013-April/003240.html
- github.com/gsliepen/tinc/commit/17a33dfd95b1a29e90db76414eb9622df9632320
Vendor advisories and official records. Exploit/PoC links are deliberately left out.