Superman is widely believed to possess a single weakness - Kryptonite. However, throughout the years, DC Comics has uncovered multiple vulnerabilities in the Man of Steel. Clark Kent derives his extraordinary powers from the yellow sun's energy. This implies that depriving him of sunlight will weaken his strength and capabilities, leaving him more vulnerable to assaults. Among his numerous talents, Clark's super-hearing proves to be the most readily overwhelmed by cunning adversaries. Most significantly, Superman has consistently demonstrated a profound weakness towards magical forces in the DC Universe. Given his immense power, Superman's writers must consistently devise methods to pose genuine threats to the Man of Steel through his adversaries. Partially, introducing exploitable weaknesses serves this purpose. 
Kryptonite is renowned as Superman's primary weakness, yet veteran readers of DC Comics understand that he possesses additional significant vulnerabilities.
Superman, true to his moniker, is portrayed as "super" in almost every conceivable way. Besides his numerous powers, the Man of Steel is widely regarded as indestructible. While the majority are aware of his susceptibility to Kryptonite, many are unaware that Superman harbors several exploitable weaknesses.
Due to his incredible strength, durability, flight capabilities, super speed, and offensive abilities such as laser vision, Superman is exceedingly difficult to defeat. Most adversaries attempt to use Kryptonite as the quickest and most efficient method to overcome him. Nevertheless, it's not the sole strategy to prevail against him. Over time, DC has presented multiple new strategies to defeat Superman. Below are his ten most significant weaknesses, factors that have previously been used to overcome him.
- Electricity
Referenced in The Dark Knight Returns #4 [authored by Frank Miller, illustrated by Klaus Janson, John Costanza, and Lynn Varley]
Electricity stands as a major weakness for Superman and is among the easiest to exploit. One of Superman's recurring antagonists is a woman named Livewire, adept at manipulating electricity to cause catastrophic effects. Furthermore, even Batman resorts to using electricity in an attempt to subdue Clark in The Dark Knight Returns #4. If Batman deems it a viable strategy to at least inflict some damage on Superman, its effectiveness is undeniable.
- Telepathy
Referenced in Wonder Woman #219 [written by Greg Rucka, with artwork by various contributors including Rags Morales, David Lopez, Tom Derenick, and Georges Jeanty.]
Although Superman is highly resistant to telepathy and mind control, he is not completely impervious to these abilities. Characters such as Poison Ivy or Scarecrow have previously demonstrated the necessity to utilize Kryptonite to enhance their powers and toxins to affect Superman, but this strategy does not apply to everyone. As illustrated in Wonder Woman #219, after extensive research and practice, Maxwell Lord discovered the precise mental suggestions required to bend Superman to his will. Consequently, Superman nearly killed Wonder Woman under Lord's influence.
Disease All-Star Superman #1 [authored by Grant Morrison, illustrated by Frank Quitely, Jamie Grant, and Phil Balsman]
Despite Superman's immunity to most diseases, this does not hold true for all types of illnesses. This fact becomes pivotal in the plot of Superman: Doomed, where Superman contracts a Doomsday virus, and in DCeased, where he is infected with a zombie virus. A notable instance occurs in All-Star Superman #1, where the hero is tricked into absorbing excessive solar radiation, ultimately resulting in cancer. Therefore, while Superman is resistant to most diseases, there are still a handful that pose a threat to his life.
Radiation The Dark Knight Returns [written by Frank Miller, illustrated by Klaus Janson, John Costanza, and Lynn Varley]
Although infrequent, there have been instances where Superman has shown vulnerability to radiation. In The Dark Knight #4, after directly being hit by a nuclear warhead, Superman is left severely weakened and near death. His survival is attributed to absorbing sunlight from a nearby flower field, rapidly replenishing his solar energy. While using a nuclear warhead against the Man of Steel may seem impractical, it has proven effective in extreme circumstances.
Super-Hearing Action Comics #1058 [written by Phillip Kennedy Johnson, illustrated by Rafa Sandoval, Matt Herms, and Dave Sharpe]
Superman possesses numerous abilities, including heat vision, cold breath, super speed, and his renowned super strength. Nevertheless, among all his powers, super-hearing stands out as a potential weakness, unlike his other strengths. This particular skill has been exploited against him multiple times, primarily by Batman, and surprisingly, Superman has even used it to his own detriment once. In the storyline of Action Comics #1058, when a villain replicated Superman's powers, the hero cleverly turned the tables by making the antagonist aware of his newfound super-hearing, which overwhelmed him, leaving him vulnerable to Superman's finishing move.
Nerve Pinch Batman #130 (authored by Chip Zdarsky and illustrated by Jorge Jimenez, Tomeu Morey, and Clayton Cowles)
This unexpected vulnerability was first revealed in Batman #130. During Superman's confrontation with the android Failsafe, a startling new weakness of the Man of Steel was uncovered. Failsafe discovered that Kryptonians, like humans, have pressure points. Using his knowledge of Kryptonian anatomy, Failsafe exploited this, causing Superman's heat vision to go haywire and reflect back into his own face. This left Superman completely disoriented, allowing Failsafe to swiftly incapacitate the hero.
Lack Of Yellow Sunlight Flashpoint #3 (created by the team of Geoff Johns, Andy Kubert, Sandra Hope, Alex Sinclair, and Nick J. Napolitano)
Superman derives his powers from Earth's yellow sun. Without consistent exposure to sunlight, he would gradually lose his abilities along with his muscular mass. Although this process takes time, if Superman were to be confined for an extended period, he would progressively lose his powers until escape becomes impossible. A prime example of this was showcased in Flashpoint #3, where a version of Superman struggled to control his powers and appeared emaciated and unhealthy.
Superman's Powers Could Deplete His Other Abilities Through Overuse When Superman overexerts his abilities, it could potentially drain his other powers.Superman possesses various powers that can be utilized in diverse ways, yet the excessive use of a specific power might weaken the others.
- Red Sunlight
As featured in Batman/Superman Annual #1, written by Joshua Williamson and illustrated by Clayton Henry, Dale Eaglesham, Gleb Melnikov, Alejandro Sánchez, and John J. Hill, the absence of yellow sunlight gradually strips Superman of his powers, but red sunlight instantly neutralizes them. Krypton, Superman's home planet, orbited a red sun, and under such conditions, Kryptonians exhibited human-like strength. When exposed to red sunlight, Superman immediately loses all his extraordinary abilities, rendering him as strong as an ordinary human. Consequently, numerous narratives have placed Superman on Earth during a fictional period where the yellow sun transforms into a red one. Sometimes, antagonists attempt to alter Earth's sun to defeat the Man of Steel.
- Overwhelming Physical Strength
Explored in Superman: The Man of Steel #18, penned by Louise Simonson and illustrated by Jon Bogdanove, Dennis Janke, Glenn Whitmore, and Bill Oakley, brute force stands as the only factor that has ever killed Superman. Generally seen as impervious to conventional damage, even in hand-to-hand combat, Superman's resilience was challenged by Doomsday. Doomsday demonstrated in his fatal encounter with Superman that sufficient physical might can indeed fell the Man of Steel. This incident likely contributes to Superman's admission that among all his adversaries, Doomsday is the one he fears most. Doomsday proved in Superman: The Man of Steel #18 that Superman can be physically defeated, though he remains one of the few to accomplish this feat conclusively.
- Magic
A common theme in Superman's stories.Superman possesses no resistance to magic, which completely circumvents his usual impregnability. This renders characters utilizing magic particularly perilous to him, and even his compatriots have previously wielded it against him. In numerous alternate timelines and futures, Batman has effectively harnessed magic to oppose Superman. A favored foe for Superman is Shazam, as he possesses nearly all of Superman's abilities, but his are rooted in magic. Hence, notwithstanding the peril posed by other elements on this list, Superman's foremost weakness, aside from Kryptonite, remains magic.