CVE-2021-29280: tp-link tl-wr840n_firmware Exposure of Resource to Wrong Sphere
CVSS: 6.4v3.1MediumModified
Published 19-08-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-29280 is a medium (CVSS 6.4) Exposure of Resource to Wrong Sphere vulnerability in tp-link tl-wr840n_firmware. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 54.5% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.4/10
010
Medium · v3.1 (NVD)EPSS score
0.75%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 19-08-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
In TP-Link Wireless N Router WR840N an ARP poisoning attack can cause buffer overflow
CVSS metrics
2 scores · 1 source · 2 versionsMedium 6.4Preferred score · NVD (NIST)
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:HSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:A/AC:M/Au:N/C:N/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.75%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.75% on 21-09-2026
21-09-202621-10-2026
EPSS score0.75%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundUpgraded Arp Poisoning
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Tp-link1 product
1 vendor · 1 product
References
2 links- hackingvila.wordpress.com/2021/04/28/upgraded-arp-poisoning-tool/X Refsource MISCThird Party Advisory