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CVE-2013-4873

15
FAUCET Score

CVE-2013-4873 describes a vulnerability in the Yahoo! Tumblr app for iOS versions prior to 3.4.1, where it transmits user credentials in cleartext. This allows remote attackers to intercept sensitive information by sniffing network traffic. The vulnerability has a CVSS score of 5.0, indicating a medium severity with a network attack vector, low complexity, and potential for partial confidentiality compromise. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.4.0CPE matchmatch criteria
cpe:2.3:a:yahoo:tumblr:*:-:*:*:*:iphone_os:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.07%
Probability of exploitation in next 30 days
EPSS Percentile
79.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0207 is in the 68th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 95374
exchange.xforce.ibmcloud.com / vulnerabilities/85823
itunes.apple.com / us/app/tumblr/id305343404
Patch
staff.tumblr.com / post/55648373578/important-security-update-for-iphone-ipad-users
Vendor Advisory
theregister.co.uk / 2013/07/17/tumblr_ios_snafu_fixed